Question: What is normal, when it comes to people’s body temperatures? A random sample of 200 human body temperatures, provided by Allen Shoemaker in the Journal of Statistical Education, had a mean of \[{{98.25}^{o}}\] and a standard deviation of \[{{0.73}^{o}}\] . Does that data indicate that the average body temperature for healthy humans is different from 98.6 the usual average temperature cited by most physicians and others? Let \({{\text{H}}_{\text{0}}}:\mu =98.6\,\,\,\,and\,\,\,\,\,{{\text{H}}_{\text{a}}}:\mu \ne 98.6\). Test at the \[\alpha =0.05\] level of significance. Draw the normal curve, show the test statistic, the critical value and rejection region (s).State a conclusion.

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