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The average internet bill in 2017 was $63. In 2020 a random sample of 30 homes...

The average internet bill in 2017 was $63. In 2020 a random sample of 30 homes found the average bill to be $66.12 with a standard deviation of $6.97. can you say with 90% certainty that the internet bills are increasing?

1. state hypotheses

2. state critical value

3. Run the test

4. summarize

Solutions

Expert Solution

As H0 is rejected at 10% los, we conclude that the claim is true that the internet bills are increasing..

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