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Are you picky about the toilet paper you buy? James is! To investigate the absorbency power of his favorite

brand of toilet paper, he went to the store and randomly selected (and purchased) 18 single rolls. He then

poured 1/4 cup of water onto a hard surface and counted how many individual squares of toilet paper it took

to completely absorb the water. Here are the results from his 18 rolls:

29

29

20

24

25 29 21

27 28 21

24 27 25 24

25 26 22 23

(a) Is there convincing evidence at the a= 0. 05 significance level that this brand of toilet paper will

require less than 26 squares to absorb 1/4 cup of water?

(b) Referring to your conclusion, what type of error may have been made? Describe the error in the

context of this study.

Respuesta :

There's no convincing evidence at 0.05 significance level that this brand of toilet paper will require less than 26 squares.

What is a significance level?

A significance level simply means is the probability that an event has occured by chance.

In this case, there's convincing evidence at 0.05 significance level that this brand of toilet paper will require less than 26 squares to absorb 1/4 cup of water. Therefore, we fail to reject the null hypothesis.

A type of error that may have been made is type II error. This is the non rejection if the null hypothesis when it's false.

Learn more about significance level on:

https://brainly.com/question/9163177

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