Exercise

Question 8

For the confidence interval to be valid, the sample mean must be normally distributed and have standard error $$\frac{s}{\sqrt(n)}.$$

Which of the following is not a condition needed for this to be true?

Instructions

50 XP

Possible answers

The sample is random.

The sample size, 60, is less than 10% of all houses.

The sample distribution must be nearly normal.