Finding hypotheses for statistics

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Reference no: EM13101482

A sample of 20 is taken, resulting in a mean of 16.45 and standard deviation of 3.59. Assume that x is normally distributed and used alpha of 0.5 to test hypotheses.

ho:u=16

ha:doesn't=16

i know for this problem you would use the p^+or-z(sqaureroot of p times q over n) But i am unsure after you plug those numbers which table to use

A hypothesis states the mean is 50. If a sample of 35 test this what is the value of b if population standard deviation is 7 and the alternative mean is 52. use alpha of 0.1

For this problem i am totally unsure of what formula to use

Reference no: EM13101482

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