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Hypothesis Testing - What is the average number of days missed by each student?

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School A states the average number of days missed by each student is 4.0. Office personnel randomly sampled a portion of their attendance records to determine if this claim was accurate. For the previous year, the following data was obtained from the sample group, regarding absences for that year: 4, 4, 3, 2, 6, 8, 7, 1, 9, 3, 1, and 6.At the .05 level of significance, is there convincing, evidence that the number of absences per student has increased?

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The solution provides a test of hypothesis in an attached Excel file.

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Hypothesis Testing- Compute the statistical test using the t test and decide what to do with the null.

School A states the average number of days missed by each student is 4.0. Office personnel randomly sampled a portion of their attendance records to determine if this claim was accurate. For the previous year, the following data was obtained from the sample group, regarding absences for that year: 4, 4, 3, 2, 6, 8, 7, 1, 9, 3, 1, and 6.At the .05 level of significance, is there convincing, evidence that the number of absences per student has ...

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