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The work week for adults in the US that work full time is normally distributed...

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The work week 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 most working adults in the US She asks 12 engineering friends at start ups for the lengths in hours of their work week Their responses are shown in the table below Test the claim using a 0 01 level of significance Give answer to at least 4 decimal places Hours 45 43 57 54 49 67 56 54 49 48 50 55 What are the correct hypotheses Ho u Ha P o 0 47 0 47 Based on the hypotheses find the following 4 o hours O hours Part 2 of 5

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