Question

You are given the following information obtained from a random sample of 4 observations from a large, normally distributed population.

25 47 32 56

a. What is the point estimate of mu?
b. Construct a 95% confidence interval for mu.
c. Construct a 90% confidence interval for mu.

Answer 1

point estimate... means just an estimate right? so what would you say the 'middle point' of the 4 numbers given?

Answer 2

its 40. now how would i construct a 95% confidence interval for mu?