Question: The calculated value of the test statistic is actually the number of standard errors that the sample mean differs from the hypothesized value of

The calculated value of the test statistic is actually the number of standard errors that the sample mean differs from the hypothesized value of µ in the null hypothesis. Suppose that the null hypothesis is Ho: µ = 4.5 , σ is known to be 1.0, and a sample of size 100 results in = 4.8 .
a. How many standard errors is above 4.5?
b. If the alternative hypothesis is Ha: µ = 4.5 and , would you reject Ho?

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