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Statistics: Hypothesis for completion of bride's wedding photos

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Suppose a wedding photographer claims he can finish a bride's wedding photos in less than 7 days. You are given the following data from a sample.

Sample size: 40
Population standard deviation: 1
Sample mean: 7.2

Formulate a hypothesis test to evaluate the claim. Which one is correct?

A) Ho: µ = 7; Ha: µâ?  7
B) Ho: µâ?¥7; Ha: µ <7
C) Ho: µâ?¤7; Ha: µ >7
D) Can't answer, not enough information

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