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state the null and alternative hypotheses The average time workers spent commuting to work five years...

state the null and alternative hypotheses

The average time workers spent commuting to work five years ago was 38. 2 minutes. The Chamber of Commerce asserts that the average is less now.

Math   Statistics-And-Probability   
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Answer #1

Solution:

Given:The average time workers spent commuting to work five years ago was 38. 2 minutes. The Chamber of Commerce asserts that the average is less now.

We have to state the null and alternative hypotheses

Mean = minutes.

We have to test if this average is less now. that is test if mean   .

Thus this is left tailed test.

thus null hypothesis H0 and alternative hypothesis H1 are:

Vs

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