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Question: this question 1 pt 4 of 5 this quiz 5...

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This Question: 1 pt 4 of 5 This Quiz: 5 pts possible E Question Help State the conclusion based on the results of the test. The mean of the pressure required to open a certain valve is known to be pu 8.3 psi Due to changes in the manufacturing process, the quality-control manager feels that the average pressure has increased. The null hypothesis was rejected Choose the correct answer below O A. There is sufficient evidence that the mean of the pressure required to open a certain valive has increased B. There is not sufficient evidence that the mean of the pressure required to open a certain vahehas n reased O C. The mean of the pressure has not changed O D. There is not sufficient evidence that the mean of the pressure required to open a certain valve has not changed O E. There is sufficient evidence that the mean of the pressure required to open a certain valve has not changed O F. The mean of the pressure has increased
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