Question

10. Do you need any assumption about the population distribution to construct the interval estimate? (4 points)

A. Yes.

B. No.

Answer 1

Correct answer: YES

since

Interval estimation is the use of sample data to calculate an interval of plausible values of an unknown population parameter.

The assumption of Interval estimation is

1) Data must be from a random sample from large population
2) The sample observations which are taken from the population are independent
3) The sample size n is small, population distribution must be approximately normal
4) The sample size n is large, population need not be approximately normal