# Question: How large of a sample is needed to estimate the

How large of a sample is needed to estimate the mean of a normally distributed population for each of the following?

a. ME = 5; Ïƒ = 40; Î± = 0.01

b. ME = 10; Ïƒ = 40; Î± = 0.01

c. Compare and comment on your answers to parts a and b.

a. ME = 5; Ïƒ = 40; Î± = 0.01

b. ME = 10; Ïƒ = 40; Î± = 0.01

c. Compare and comment on your answers to parts a and b.

**View Solution:**## Answer to relevant Questions

How large a sample is needed to estimate the population proportion for each of the following? a. ME = 0.03; Î± = 0.05 b. ME = 0.05; Î± = 0.05 c. Compare and comment on your answers to parts a and b. 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 ...An instructor in a class of 417 students is considering the possibility of a take-home final examination. She wants to take a random sample of class members to estimate the proportion who prefer this form of examination. If ...A marketing research assistant for a veterinary hospital surveyed a random sample of 457 pet owners. Respondents were asked to indicate the number of times that they visit their veterinarian each year. The sample mean ...Consider the data in Exercise 7.90. It was reported in the local paper that less than one-third (from 23.7% to 32.3%) of the population prefers the online renewal process. What is the confidence level of this interval ...Post your question