Question

A scientist who studies sleep has developed a new technique to help people sleep each night. He
is conducting a study of 100 people and wants to determine if there is a significant difference in
Deople's amount of sleep before using the technique compared to after using the technique.
Which of the following describes the scientist's null and alternative hypotheses?
O null hypothesis: 4p = 0; alternative hypothesis: Lp 70
O null hypothesis: 4y = 0; alternative hypothesis: 4p = 0
O null hypothesis: 4-12 = 0; alternative hypothesis: 4-170
null hypothesis: 44-470; alternative hypothesis: 44-42 = 0

Answer 1

Considering the situation, the scientist's null and alternative hypotheses are described by:

$H_0: \mu = 0, H_1: \mu \neq 0$

What are the hypothesis tested?

At the null hypothesis, it is tested if there is no difference in the sleep's amounts, that is, the mean is 0, hence:

$H_0: \mu = 0$.

At the alternative hypothesis, it is tested if there is difference in the sleep's amounts, that is, the mean is different of 0, hence:

$H_1: \mu \neq 0$.

More can be learned about the test of an hypotheses at https://brainly.com/question/26454209