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.
A Ho: µ = 7; Ha: µ≠ 7
B Ho: µ≥7; Ha: µ <7
C Ho: µ≤7; Ha: µ >7
D Can't answer, not enough information