Question

A company currently uses Brand A lightbulbs, which have a mean life of 1,000 hours. A salesperson marketing Brand B, a new brand of bulb, contacts the company. The company will switch to the new brand of bulb only if there is convincing evidence that the mean life of Brand B is greater than 1,000 hours. Which of the following hypotheses should the company test?
A. H0: The mean life of Brand B is 1,000 hours.
H1: The mean life of Brand B is more than 1,000 hours
B. H0: The mean life of Brand B is 1,000 hours.
H1: The mean life of Brand B is less than 1,000 hours
C. H0: The mean life of Brand A is 1,000 hours.
H1: The mean life of Brand A is more than 1,000 hours
D. H0: The mean life of Brand A is 1,000 hours.
H1: The mean life of Brand A is less than 1,000 hours
E. H0: The mean life of Brand A is equal to the mean life of Brand B bulbs
H1: The mean life of Brand A is not equal to the mean life of Brand B bulbs

Answer 1

The hypotheses of the company are:

• H0: The mean life of Brand A is 1000 hours
• H1: The mean life of Brand B is more than 1000 hours

How to determine the hypotheses

The hypotheses consist of the null and the alternate hypotheses

The null hypothesis is always represented by the equal to "=" sign.

So, the null hypothesis is:

H0: The mean life of Brand A is 1000 hours

From the question, we understand that the evidence is to show that the mean life is greater than Brand B.

So, the alternate hypothesis is:

H1: The mean life of Brand B is more than 1000 hours

Read more about null and alternate hypotheses at:

https://brainly.com/question/15980493