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Recent questions tagged sample


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Healthy Fast Food Notes - Street Food Comprehension
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Healthy Fast Food Notes - Street Food Comprehension Healthy Fast Food Notes - Street Food Comprehension     ...
by Pieter Gold Status
(31,957 points)
asked in English 2 days ago
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Josh rolls one six-sided die and one four-sided die. What is the probability he will roll two odd numbers?
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What are the formulae for population and sample variance?
1 answer 111 views
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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.

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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.

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A fair coin is tossed, and a fair die is thrown. Write down sample spaces for
1 answer 133 views
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 ...
by Pieter Gold Status
(31,957 points)
asked in Data Science & Statistics Feb 8
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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.
1 answer 87 views
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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.
0 answers 46 views
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What is a census?
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What is a census?What is a census? ...
by MathsGee Platinum
(119,140 points)
asked in Data Science & Statistics Jan 24
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What is the difference between the correlation coefficient and the slope of the line?
1 answer 134 views
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What is the formula for sample standard deviation?
1 answer 96 views
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What is a sample space when calculating probability?
1 answer 112 views
What is a sample space when calculating probability?What is a sample space when calculating probability? ...
by MathsGee Platinum
(119,140 points)
asked in Data Science & Statistics Dec 15, 2021
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What is a clinical trial?
1 answer 96 views
What is a clinical trial?What is a clinical trial? ...
by MathsGee Platinum
(119,140 points)
asked in Data Science & Statistics Oct 16, 2021
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A grocery store is interested in how much money, on average, their customers spend each visit in the produce department.
1 answer 1.4K views
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 ...
by MathsGee Platinum
(119,140 points)
asked in Physics & Chemistry Oct 13, 2021
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Define population and mention the criteria of selecting sample from it.
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How is sample size of a definite population determined?
0 answers 104 views
How is sample size of a definite population determined?How is sample size of a definite population determined? ...
by MathsGee Platinum
(119,140 points)
asked in Data Science & Statistics Oct 6, 2021
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How will you determine the optimal sample size?
1 answer 99 views
How will you determine the optimal sample size?How will you determine the optimal sample size? ...
by MathsGee Platinum
(119,140 points)
asked in Data Science & Statistics Oct 6, 2021
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In a questionnaire of 100 students at MathsGee University, \(20 \%\) were found to be Business Management students.
0 answers 79 views
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 ...
by MathsGee Platinum
(119,140 points)
asked in Data Science & Statistics Oct 6, 2021
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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:
1 answer 137 views
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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.
0 answers 148 views
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What is a probability distribution function?
1 answer 145 views
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What is a distribution function in statistics?
1 answer 131 views
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A fair die is tossed twice. What is its sample size?
1 answer 178 views
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 ...
by MathsGee Platinum
(119,140 points)
asked in Mathematics Sep 12, 2021
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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.

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If two variables do not have a strong (linear) relationship, the correlation coefficient between the two variables will be closest to:
1 answer 651 views
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A six-sided number cube is rolled. Find the probability of rolling an odd number.
1 answer 333 views
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How do I compute the probability of an event with equally likely outcomes?
1 answer 248 views
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What is one sample t-test?
1 answer 80 views
What is one sample t-test?What is one sample t-test? ...
by Student SIlver Status
(10,904 points)
asked in Data Science & Statistics Jul 23, 2021
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What types of variables are used for Pearson’s correlation coefficient?
1 answer 446 views
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What is correlation?
1 answer 99 views
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What are population and sample in inferential statistics, and how are they different?
1 answer 341 views
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What is the probability of getting an even prime number when a dice is tossed?
1 answer 298 views
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What is the difference between correlation coefficient and coefficient of determination?
2 answers 2K views
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 ...
by Bach1234
(118 points)
asked in Mathematics Jun 27, 2021
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What is a random sample?
1 answer 113 views
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What is the difference between a "complete sample" and an "unbiased sample"?
1 answer 248 views
What is the difference between a "complete sample" and an "unbiased sample"?What is the difference between a "complete sample" and an "unbiased sample"? ...
by Maths Genie Bronze Status
(5,562 points)
asked in Data Science & Statistics Jun 17, 2021
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What is a statistic?
1 answer 109 views
What is a statistic?What is a statistic? ...
by Maths Genie Bronze Status
(5,562 points)
asked in Data Science & Statistics Jun 17, 2021
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Which phrases i-iv below apply to the sample correlation coefficient $r_{X Y} ?$
1 answer 144 views
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 ...
by Maths Genie Bronze Status
(5,562 points)
asked in Data Science & Statistics Jun 17, 2021
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An investigator wishes to estimate the difference between two population mean lifetimes of two different brands of batteries under specified conditions.

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