If a population of N = 10 scores has a mean of 30 and a standard...

Question

Question

If a population of N = 10 scores has a mean of 30 and a standard deviation of 5, then the population variance equals

Answer 1

Answer #1

Solution :

Given that,

mean = $\mu$ = 30 ,

N = 10 and

standard deviation = $\sigma$ = 5

population variance = $\sigma$ ² = 5² = 25

Answer 2

Similar Homework Help Questions

A population of N = 10 scores has a mean of μ = 24 with SS...

A population of N = 10 scores has a mean of μ = 24 with SS = 160, a variance of σ2 = 16, and a standard deviation of σ = 4. For this population, what is Σ(X − μ)? A. 0. B. 4. C. 16. D. 160
1. (2 points) For the following population N=5, calculate mean, standard deviation, and 7-scores for each...

1. (2 points) For the following population N=5, calculate mean, standard deviation, and 7-scores for each score Scores: 8, 5, 4, 6,2
A population of scores has a standard deviation of 5. In this population a raw score...

A population of scores has a standard deviation of 5. In this population a raw score of 45 corresponds to a z score of 1.5. What is the population mean?

A sample of n = 16 scores is obtained from a population with a mean of...

A sample of n = 16 scores is obtained from a population with a mean of 70 and standard deviation of 20. If the sample mean is 75, then the z-score corresponding to the sample mean is ____. Hint: You need to use the sampling distribution of the mean for a sample size of 16 and population standard deviation of 20.
Calculate SS, variance, and standard deviation for the following population of N = 8 scores: 1,...

Calculate SS, variance, and standard deviation for the following population of N = 8 scores: 1, 3, 1, 10, 1, 0, 1, 3 (Note: The computational formula works well with these scores.)
A population has a mean of 30 and a standard deviation of 9. If samples of...

A population has a mean of 30 and a standard deviation of 9. If samples of size 36 are collected, find the mean and standard deviation of the sampling distribution. The mean of the sampling distribution is and the standard error is A population has a mean of 30 and a standard deviation of 9. If samples of size 36 are collected, find the mean and standard deviation of the sampling distribution. The mean of the sampling distribution is and...

a ) ( mean, proportion, standard deviance or variance ) B ) is n > 30...

a ) ( mean, proportion, standard deviance or variance ) B ) is n > 30 C ) determine the parameter to be tested D ) determine the test to be performed B ) Determine the parameter to be tested, and the test to be performed. Part: 0 / 6 Part 1 of 6 A simple random sample of size 13 has mean x = 9.4. The population standard deviation is o = 3.72. The population is normally distributed. Can...
A finite population with N = 450 has a mean u = 112.5 and standard deviation...

A finite population with N = 450 has a mean u = 112.5 and standard deviation o = 17.3. For samples of size n = 41, answer the following. The variance is sample mean X. for the sampling distribution of the
A population with a mean of 80 and a standard deviation of 10 is transformed into...

A population with a mean of 80 and a standard deviation of 10 is transformed into z-scores. After the transformation, the population of z-scores: will have a standard deviation of ____________ will have a mean of ____________ will have what kind of shape relative to the original distribution? _________________________

1. A population has a mean of 60 and a standard deviation of 30. Samples of...

1. A population has a mean of 60 and a standard deviation of 30. Samples of size 16 are randomly selected. Calculate the standard deviation of the sample distribution X. 2. Samples of size 16 are drawn from a population. the sampling distribution for X has a standard deviation of 0.25. Find the standard deviation of the population. 4. Tires are found to have a mean life of 40,000 miles. The standard deviation is 8000. A sample of 400 is...