Suppose a random sample of size 36 is selected from a population with mean , the value of which is unknown. The sample had a mean of 10.5 and a standard deviation of 12. You are given the following hypotheses:<\/p>
Ho: = 8<\/p>
HA<\/sub>: > 8 <\/p> If testing at of 5%, which of the following is the correct decision and conclusion?<\/p> <\/p> A. As Z calculated of 1.25 is less than Z critical of 1.645, we reject Ho and conclude there is significant evidence the population mean is greater than 8.<\/p> <\/p> B.None of these choices is correct<\/p> <\/p> C. As t calculated of 1.25 is less than t critical of 1.69, we reject Ho and conclude there is significant evidence the population mean is greater than 8.<\/p> <\/p> D. As Z calculated of 1.25 is less than Z critical of 1.645, we retain Ho and conclude there is no significant evidence the population mean is greater than 8.<\/p> <\/p> E. As t calculated of 1.25 is less than t critical of 1.69, we retain Ho and conclude there is no significant evidence the population mean is greater than 8.<\/p>",
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