# Question

Assume simple random sampling. Calculate the variance of the sample mean, σ2x for each of the following.

a. N = 1200; n = 80; s = 10

b. N = 1425; n = 90; s2 = 64

c. N = 3200; n = 200; s2 = 129

a. N = 1200; n = 80; s = 10

b. N = 1425; n = 90; s2 = 64

c. N = 3200; n = 200; s2 = 129

## Answer to relevant Questions

Assume simple random sampling. Calculate the 95% confidence interval estimate for the population mean for each of the following. a. N = 1200; n = 80; s = 10; x = 142 b. N = 1425; n = 90; s2 = 64; x = 232.4 c. N = 3200; n = ...An auditor, examining a total of 820 accounts receivable of a corporation, took a random sample of 60 of them. The sample mean was $127.43, and the sample standard deviation was $43.27. a. Using an unbiased estimation ...An accounting firm has 1200 clients. From a random sample of 120 clients, 110 indicated very high satisfaction with the firm's service. Find a 95% confidence interval for the proportion of all clients who are very highly ...The student government association at a university wants to estimate the percentage of the student body that supports a change being considered in the academic calendar of the university for the next academic year. How many ...Suppose that Brent Matthews, manager of a Sam’s Club in Chattanooga, Tennessee, wants to estimate the mean number of gallons of milk that are sold during a typical weekday. Brent checks the sales records for a random ...Post your question

0