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    Finding Hypotheses for Statistics

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    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

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    A complete, neat and step-by-step solution is provided in the attached files with regards to finding a hypothesis for a given scenario.

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