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#2
The alt hypothesis is given directly in the problem. The null hypothesis is exactly the opposite.
Using the standard deviation and sample size, calculate the standard error (aka, the standard deviation of the sample distribution). The test statistic is the number of standard errors between the sample mean and the hypothesized population mean -- i.e. 'Z'
Look up the area corresponding to Z in a standard normal calculator to determine 'p'
Using the standard deviation and sample size, calculate the standard error (aka, the standard deviation of the sample distribution). The test statistic is the number of standard errors between the sample mean and the hypothesized population mean -- i.e. 'Z'
Look up the area corresponding to Z in a standard normal calculator to determine 'p'
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