Question

Asked Dec 2, 2019

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The average house has 11 paintings on its walls. Is the mean smaller for houses owned by teachers? The data show the results of a survey of 12 teachers who were asked how many paintings they have in their houses. Assume that the distribution of the population is normal.

8, 10, 11, 12, 9, 8, 12, 8, 12, 12, 9, 9

- The test statistic ? t z = (please show your answer to 3 decimal places.)
- The p-value = (Please show your answer to 4 decimal places.)
- Can you show the process on a ti84

Step 1

**Introduction:**

The population standard deviation is not known. As a result, the sample standard deviation must be used to conduct the test. In this situation, it is most suitable to use the one-sample *t*-test, with a less than-type alternative hypothesis.

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