Homework Answers

if the samples are 16, 17, 15, 24, 20, 20, 20, 23, 18, and 19. what is the point estimate of the population standard deviation?

if the given samples are 45, 47, 48, 51, 50, 55, 49, 48, 55, and 54. compute the point estimate of the population variance.

if the sum of the given sample of size 35 is 5467. What is the point estimate of the population mean?

The average time it takes a group of college students to complete a certain examination is 32 minutes. The standard deviation is 6 minutes. Assume that the variable is normally distributed.

If 64 randomly selected college students take the examination, what is the probability that the mean time it takes the group to complete the test will be less than 36 minutes?

If the population size is 100 with the population variance of 8. what is the variance of sampling distribution of sample means which has a sample size of 16?

How many possible samples of size 3 that can be drawn with replacement from the population 2, 3, 6, 8 and 10?

Consider a population consisting of the values 3, 6, 5, 6, 4 and 3. what is the population mean?

If the population standard deviation is 4.2, what is the standard deviation of the sampling of the distribution of its means if the sampling distribution was derived with sample size n=4 and all possible samples were drawn with replacements?

What is the mean of the population if the mean of the sampling distribution of the means is 7.16?