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Mathematics, 25.12.2019 23:31 8848
Suppose you are testing the null hypothesis that a population mean is less than or equal to 46, against the alternative hypothesis that the population mean is greater than 46. the sample size is 25 and alpha =.05. if the sample mean is 50 and the population standard deviation is 8, the observed z value is:
a) 2.5
b) -2.5
c) 6.25
d) -6.25
e) 12.5
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Suppose you are testing the null hypothesis that a population mean is less than or equal to 46, agai...
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