Recent questions tagged sample

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
Healthy Fast Food Notes - Street Food Comprehension
Healthy Fast Food Notes - Street Food Comprehension Healthy Fast Food Notes - Street Food Comprehension &nbsp; &nbsp; ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
Josh rolls one six-sided die and one four-sided die. What is the probability he will roll two odd numbers?
Josh rolls one six-sided die and one four-sided die. What is the probability he will roll two odd numbers?Josh rolls one six-sided die and one four-sided die. What is the probability he will roll two odd numbers? ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
What are the formulae for population and sample variance?
What are the formulae for population and sample variance?What are the formulae for population and sample variance? ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
How is it that data from a normal distribution that is more than 2 standard deviations from the mean is 5%? It seems to contradict the 68-95-99.7 rule.
How is it that data from a normal distribution that is more than 2 standard deviations from the mean is 5%? It seems to contradict the 68-95-99.7 rule. How is it that data from a normal distribution that is more than 2 standard deviations from the mean is 5%? It seems to contradict the 68-95-99.7 ru ...
close
A marketing firm claims that its ad campaign will increase sales for a fast-food chain by $15 \%$. In a random sample of 25 stores, the average increase in sales was $14 \%$ with a standard deviation of $5 \%$.A marketing firm claims that its ad campaign will increase sales for a fast-food chain by $15 \%$. In a random sample of 25 stores, the average incr ...
close
A marketing firm claims that its ad campaign will increase sales for a fast-food chain by $9 \%$. In a random sample of 35 stores, the average increase in sales was $8 \%$ with a standard deviation of $4 \%$.A marketing firm claims that its ad campaign will increase sales for a fast-food chain by $9 \%$. In a random sample of 35 stores, the average incre ...
close
A company estimates that when $x$ thousand dollars are spent on the marketing of a certain product, $Q(x)$ units of the product will be sold, where $Q(x)=$ $-4 x^{3}+252 x^{2}-3,200 x+17,000$ for $10 \leq x \leq 40$.A company estimates that when $x$ thousand dollars are spent on the marketing of a certain product, $Q(x)$ units of the product will be sold, wher ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
The human resources department of a company recorded the number of days that 10 employees in the commercial pricing department were absent over the past financial year.
The human resources department of a company recorded the number of days that 10 employees in the commercial pricing department were absent over the past financial year.The human resources department of a company recorded the number of days that 10 employees in the commercial pricing department were absent over the pa ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
A six-sided die has four green and two red faces and is balanced so that each face is equally likely to come up. The die will be rolled several times.
A six-sided die has four green and two red faces and is balanced so that each face is equally likely to come up. The die will be rolled several times.A six-sided die has four green and two red faces and is balanced so that each face is equally likely to come up. The die will be rolled several times. ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
A fair coin is tossed, and a fair die is thrown. Write down sample spaces for
A fair coin is tossed, and a fair die is thrown. Write down sample spaces forA fair coin is tossed, and a fair die is thrown. Write down sample spaces for (a) the toss of the coin; (b) the throw of the die; (c) the combination ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
Describe the sample space and all 16 events for a trial in which two coins are thrown and each shows either a head or a tail.
Describe the sample space and all 16 events for a trial in which two coins are thrown and each shows either a head or a tail.Describe the sample space and all 16 events for a trial in which two coins are thrown and each shows either a head or a tail. ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
Calculate $P(500)$ (the enrollment in Math 151 in fall of 2500). Simplify your answer as much as possible. The answer will be quite large.
Calculate $P(500)$ (the enrollment in Math 151 in fall of 2500). Simplify your answer as much as possible. The answer will be quite large.Assume that Math 151 in fall of 2000 had an enrollment of 500 students and in fall 2002 had an enrollment of 750 students. Assume also that if $P(t)\ ... close 1 answer 88 views A reporter for a student newspaper is writing an article on the cost of off-campus housing. A sample of 16 one-bedroom apartments within a half-mile of campus resulted in a sample mean of \(\ 750$ per month ...A reporter for a student newspaper is writing an article on the cost of off-campus housing. A sample of 16 one-bedroom apartments within a half-mile o ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
If $3 \%$ of electronic units manufactured by a company are defective. Find the probability that in a sample of 200 units, less than 2 bulbs are defective.
If $3 \%$ of electronic units manufactured by a company are defective. Find the probability that in a sample of 200 units, less than 2 bulbs are defective.If $3 \%$ of electronic units manufactured by a company are defective. Find the probability that in a sample of 200 units, less than 2 bulbs are def ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
What is a census?
What is a census?What is a census? ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
What is the difference between the correlation coefficient and the slope of the line?
What is the difference between the correlation coefficient and the slope of the line?What is the difference between the correlation coefficient and the slope of the line? ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
What is the formula for sample standard deviation?
What is the formula for sample standard deviation?What is the formula for sample standard deviation? ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
What is a sample space when calculating probability?
What is a sample space when calculating probability?What is a sample space when calculating probability? ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
What is a clinical trial?
What is a clinical trial?What is a clinical trial? ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
A grocery store is interested in how much money, on average, their customers spend each visit in the produce department.
A grocery store is interested in how much money, on average, their customers spend each visit in the produce department.A grocery store is interested in how much money, on average, their customers spend each visit in the produce department. Using their store records, th ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
Define population and mention the criteria of selecting sample from it.
Define population and mention the criteria of selecting sample from it.Define population and mention the criteria of selecting sample from it. ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
How is sample size of a definite population determined?
How is sample size of a definite population determined?How is sample size of a definite population determined? ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
How will you determine the optimal sample size?
How will you determine the optimal sample size?How will you determine the optimal sample size? ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
In a questionnaire of 100 students at MathsGee University, $20 \%$ were found to be Business Management students.
In a questionnaire of 100 students at MathsGee University, $20 \%$ were found to be Business Management students.In a questionnaire of 100 students at MathsGee University, $20 \%$ were found to be Business Management students. Based on this information, the res ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
The half-life of an isotope of an element is 5 days. The mass of a 10 gram sample of this isotope remaining after 20 days is:
The half-life of an isotope of an element is 5 days. The mass of a 10 gram sample of this isotope remaining after 20 days is:The half-life of an isotope of an element is 5 days. The mass of a 10 gram sample of this isotope remaining after 20 days is: w) 0.312 grams x) 0.62 ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
An electric pole, 7 meters high, casts a shadow of 5 meters. Find the height of a tree that casts a shadow of 10 meters under similar conditions.
An electric pole, 7 meters high, casts a shadow of 5 meters. Find the height of a tree that casts a shadow of 10 meters under similar conditions.An electric pole, 7 meters high, casts a shadow of 5 meters. Find the height of a tree that casts a shadow of 10 meters under similar conditions. ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
What is a probability distribution function?
What is a probability distribution function?What is a probability distribution function? ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
What is a distribution function in statistics?
What is a distribution function in statistics?What is a distribution function in statistics? ...
close
Student ratings of college instructors is common and widespread across the USA. Often such ratings consist of several instructional dimensions such as course organization, clarity of presentation, utility of course material, etc.Student ratings of college instructors is common and widespread across the USA. Often such ratings consist of several instructional dimensions such as ...
close
You wish to compare mathematics scores on the CRCT for students exposed to three different teaching methods across the state of Georgia. What size sample do you anticipate is needed?You wish to compare mathematics scores on the CRCT for students exposed to three different teaching methods across the state of Georgia. What size sam ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
A researcher plans to interview students to learn whether they have ever tried smoking. About 1100 students attend the school the researcher wishes to sample.
A researcher plans to interview students to learn whether they have ever tried smoking. About 1100 students attend the school the researcher wishes to sample.A researcher plans to interview students to learn whether they have ever tried smoking. About 1100 students attend the school the researcher wishes to ...
close
Assume you wish to randomly sample from a population of 33,050 teachers across the southeast USA. With a $95 \%$ confidence level and an error rate of no more than $+/-4 \%$, what size sample would be needed?Assume you wish to randomly sample from a population of 33,050 teachers across the southeast USA. With a $95 \%$ confidence level and an error rate ...
close
A teacher wishes to study the learning difficulties in Mathematics in a university where there are 3, 455 students. Compute the acceptable sample size from the university using a margin of error of $5 \%$.A teacher wishes to study the learning difficulties in Mathematics in a university where there are 3, 455 students. Compute the acceptable sample size ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
A fair die is tossed twice. What is its sample size?
A fair die is tossed twice. What is its sample size?A fair die is tossed twice. What is its sample size? A. 6 B. 12 C. 36 D. 48 ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
A shipment of 20 cars contains 3 defective cars. Find the probability that a sample of size 2 , drawn from the 20 , will not contain exactly one defective car.
A shipment of 20 cars contains 3 defective cars. Find the probability that a sample of size 2 , drawn from the 20 , will not contain exactly one defective car.A shipment of 20 cars contains 3 defective cars. Find the probability that a sample of size 2 , drawn from the 20 , will not contain exactly one defec ...
close
The half-life of radium is 1600 years, i.e., it takes 1600 years for half of any quantity to decay. If a sample initially contains $50 \mathrm{~g}$, how long will it be until it contains $45 \mathrm{~g}$ ? The half-life of radium is 1600 years, i.e., it takes 1600 years for half of any quantity to decay. If a sample initially contains $50 \mathrm{~g}$, h ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
If two variables do not have a strong (linear) relationship, the correlation coefficient between the two variables will be closest to:
If two variables do not have a strong (linear) relationship, the correlation coefficient between the two variables will be closest to:If two variables do not have a strong (linear) relationship, the correlation coefficient between the two variables will be closest to: (a) 0 (b) &am ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
A six-sided number cube is rolled. Find the probability of rolling an odd number.
A six-sided number cube is rolled. Find the probability of rolling an odd number.A six-sided number cube is rolled. Find the probability of rolling an odd number. ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
How do I compute the probability of an event with equally likely outcomes?
How do I compute the probability of an event with equally likely outcomes?How do I compute the probability of an event with equally likely outcomes? ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
What is one sample t-test?
What is one sample t-test?What is one sample t-test? ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
What types of variables are used for Pearson’s correlation coefficient?
What types of variables are used for Pearson’s correlation coefficient?What types of variables are used for Pearson&amp;rsquo;s correlation coefficient? ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
What is correlation?
What is correlation?What is correlation? ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
What are population and sample in inferential statistics, and how are they different?
What are population and sample in inferential statistics, and how are they different?What are population and sample in inferential statistics, and how are they different? ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
What is the probability of getting an even prime number when a dice is tossed?
What is the probability of getting an even prime number when a dice is tossed?What is the probability of getting an even prime number when a dice is tossed? ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
What is the difference between correlation coefficient and coefficient of determination?
What is the difference between correlation coefficient and coefficient of determination?What is the difference between correlation coefficient and coefficient of determination? Can you give me a simple deffinition, meaning and example of ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
What is a random sample?
What is a random sample?What is a random sample? ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
What is the difference between a "complete sample" and an "unbiased sample"?
What is the difference between a "complete sample" and an "unbiased sample"?What is the difference between a &quot;complete sample&quot; and an &quot;unbiased sample&quot;? ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
What is a statistic?
What is a statistic?What is a statistic? ...
close

Notice: Undefined index: avatar in /home/customer/www/mathsgee.com/public_html/qa-theme/AVEN/qa-theme.php on line 993
Which phrases i-iv below apply to the sample correlation coefficient $r_{X Y} ?$
Which phrases i-iv below apply to the sample correlation coefficient $r_{X Y} ?$Which phrases i-iv below apply to the sample correlation coefficient $r_{X Y} ?$ (i) measures linear association between two variables, (ii) is never ...