unıt s unapter у: Lesson ฯ. I Assignment
Score: $57.6 / 100 \quad 10 / 17$ answered
Question 16
It is commonly believed that the mean body temperature of a healthy adult is $98.6^{\circ} \mathrm{F}$. You are not entirely convinced. You believe that it is not $98.6^{\circ} \mathrm{F}$.
a) If you going to test this claim at the 0.01 significance level, what would be your null and alternative hypotheses?
\[
\begin{array}{l}
H_{0}: ? \quad \vee \\
H_{1}: ? \quad \vee
\end{array}
\]
b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)?
left-tailed
right-tailed
two-tailed

Step 1 ：The null hypothesis (H0) is a statement of no effect or no difference. In this case, it would be that the mean body temperature of a healthy adult is 98.6 degrees Fahrenheit.

Step 2 ：The alternative hypothesis (H1) is what you might believe to be true or hope to prove true. In this case, it would be that the mean body temperature of a healthy adult is not 98.6 degrees Fahrenheit.

Step 3 ：As for the type of test, since we are not specifying whether we believe the mean body temperature to be higher or lower than 98.6 degrees Fahrenheit, we should conduct a two-tailed test.

Step 4 ：Final Answer: \[ \begin{array}{l} H_{0}: \text{The mean body temperature of a healthy adult is } 98.6^{\circ} \mathrm{F} \\ H_{1}: \text{The mean body temperature of a healthy adult is not } 98.6^{\circ} \mathrm{F} \end{array} \] The type of hypothesis test to be conducted is a two-tailed test.