1

As a business analyst, you are given a hypothesis test which has a Type I error probability (alpha) of 0.05, it means that

if the null hypothesis is true, you don't reject it 5% of the time

if the null hypothesis is true, you reject it 5% of the time

if the null hypothesis is false, you don't reject it 5% of the time

if the null hypothesis is false, you reject it 5% of the time2

2

Which of the following would be an appropriate null hypothesis?

The mean of a population isis less than or equal to 1584561.123.

The mean of a sample is less than or equal to 158.

The mean of a population is greater than 455.

Only (a) and (b) are appropriate

3.

Which of the following would be an appropriate null hypothesis?

The mean of a population isis less than or equal to 1584561.123.

The mean of a sample is less than or equal to 158.

The mean of a population is greater than 455.

Only (a) and (b) are appropriate