Question: The workweek for adults in the US that work full time is normally distributed with a mean of 47 hours. A newly hired engineer at

The workweek for adults in the US that work full time is normally distributed with a mean of 47 hours. A newly hired engineer at a start-up company believes that employees at start-up companies work more on average then working adults in the US. She asks 15 engineering friends at start-ups for the lengths in hours of their workweek. Their responses are shown in the table below. Test the claim using a 5% level of significance.

Data. Hours : 44, 43, 54, 50, 48, 46, 48, 48, 50, 46, 55, 55, 52, 54, 46

The hypotheses for this problem are: H0: = 47 H1: > 47 Find the test statistic.

Round answer to 4 decimal places.

Test Statistic t =

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