The Number of Calories in a 12 -Ounce Serving of Randomly-Selected

Essay

The number of calories in a 12 -ounce serving of randomly-selected regular and lite beers is listed. Is there sufficient evidence to conclude that the mean number of calories for lite beers is significantly less than that for the regular beers? Use $\alpha = 0.10$ . Assume the variables are approximately normally distributed.
$\begin{array} { l c c c c c c c c } \text { Regular: } & 136 & 121 & 128 & 90 & 141 & 149 & 119 & 138 \\ & 132 & 120 & 112 & 172 & 133 & & & \\\\ \text { Lite: } & 100 & 110 & 105 & 103 & 115 & 99 & 123 & 137 \\ & 121 & 156 & & & & & & \end{array}$ a.State the hypotheses.
b. Find the critical value(s).
c. Compute the test value.
d. Make the decision.
e. Summarize the results.