22. Perform the following hypothesis test to a 1% level of significance. Ho:u = 72 It is known that o = 4.6, and when 20 people are surveyed, it is found that = 74. You will find the corresponding z-score within this portion of the standard normal chart: H1:µ > 72 .00 .01 .02 .03 .04 1.9 2.0 .9713 .9772 9719 .9778 9726 .9783 .9732 .9788 .9738 .9793 a) Please circle the correct conclusion: reject Ho fail to reject Ho b) In a few sentences, explain why this is the correct conclusion. That is, explain in words what the math is telling us. It may help to use courtroom language like “guilty" or “not enough evidence" etc.

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