Two Coffee-Vending Machines Are Studied to Determine Whether They Distribute

Multiple Choice

Two coffee-vending machines are studied to determine whether they distribute the same amounts.Samples are taken and the number of ounces is recorded for each machine. $$\begin{array} { c c } \text { Machine A } & \text { Machine B } \\\hline 6.10 & 5.99 \\5.95 & 6.01 \\5.98 & 5.98 \\6.01 & 5.96 \\6.00 & 6.08 \\5.95 & 5.89 \\6.02 & 6.01 \\6.04 & 6.00 \\5.99 & 5.97 \\6.06 & 6.00\end{array}$$
On average,can we conclude that the machines distribute the same amount? Test at ? = .05.

A) Reject the null hypothesis.
B) Do not reject the null hypothesis.
$\begin{array}{ccc} \text { }&\text { Machine A } & & \text { Machine B } \\ \text { }& 20 & & 9.5 \\ \text { }&3.5 & & 13.5 \\ \text { }&7.5 & & 7.5 \\ \text { }&13.5 & & 5 \\ \text { }&11.5 & & 19 \\ \text { }&3.5 & & 1 \\ \text { }&15 & & 18 \\ \text { }&16 & & 11.5 \\ \text { }&9.5 & & 6 \\ \text { }&17 & & 2 \\ \text { TOTAL }&117 && 93\end{array}$