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A random sample of size 20 from a normal population will sample mean 42 and sample standard deviation of 6 . To test the hypothesis the population mean 44 at 5% level of significance , find the p-value and comment

  • Statistics -

    Ho: mean1 = mean2
    H1: mean1 ≠ mean2

    Z = (mean 1 -mean2)/ (SD/sq rt N)

    Find Z value and look it up in table in the back of your statistics text called something like "areas under normal distribution" to get p value.

    I hope this helps.

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