Question

A local Internet provider wants to test the claim that the average time a family spends...

A local Internet provider wants to test the claim that the average time a family spends online on a Saturday is at least 7 hours. To test this claim, the Internet provider randomly samples 30 households and finds that these families' mean number of hours spent on the Internet on a Saturday was 6 hours with a standard deviation of 1.5 hours.  At a level of significance of 0.05, can the Internet provider's claim be supported?

Based on your results from parts 1-5, which one of the statements below would be the correct interpretation of this hypothesis testing?

A) It is not true that the average time a family spends online on a Saturday is at least 7 hours

B) We have enough evidence to support that the average time a family spends online on a Saturday is at least 7 hours.

C) We can not accept that the average time a family spends online on a Saturday is at least 7 hours.

D) We have enough evidence to support the claim that the average time a family spends online on a Saturday is at least 7 hours.

E) We don't have enough evidence to support the claim that the average time a family spends online on a Saturday is at least 7 hours.

Math   Statistics-And-Probability   
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Homework Answers

Answer #1

The statistical software output for this problem is:

From above output:

P - value = 0.0005 which is less than 0.05 significance level. Hence,

We don't have enough evidence to support the claim that the average time a family spends online on a Saturday is at least 7 hours.

Option E is correct.

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