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## Null Hypothesis Testing statistics problems

February 9, 2021 / 1 Comment on Null Hypothesis Testing statistics problems

## Null Hypothesis Test for MEAN example question

A literary critic wants to establish that the mean number of words per sentence, appearing in newly discovered short story is different from 9.1 words. A sample of 36 sentences provided a data with mean of 8.6 words and standard deviation of 1.2 words. Test at a level of significance * α* = 0.10.

Solution to this **Hypothesis Testing** Statistics practice problem is given in the video below!

## Null Hypothesis Test for PROPORTION example problem

Out of a sample of ** n** = 625 students interviewed, 139 missed at least one class last week. Let

**= proportion of students that missed at least one class last week. Conduct a test with the intent of establishing that the proportion of students that missed at least one class last week is greater than 0.20. Test at a level of significance**

*p***= 0.05.**

*α*

Solution to this **Hypothesis Testing** Statistics practice problem is given in the video below!

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