The Average Monthly Cell Phone Bill Was Reported to Be $\$ 50.07$

question 35

Multiple Choice

The average monthly cell phone bill was reported to be $\$ 50.07$ by the U.S. Wireless Indus Random Sampling of a large cell phone company found the following monthly cell phone (in dollars) :
$\begin{array}{llll}\hline 52.62 & 46.27 & 59.77 & 67.21 \\57.26 & 49.24 & 45.99 & 46.81 \\55.39 & 48.08 & & \\\hline\end{array}$

At the $0.05$ level of significance, can it be concluded that the average phone bill has incre ry. reased?

• A) No. There is not enough evidence to support the claim that the average bill has increased from $50.07.
• B) There is not enough information to draw a conclusion.
• C) Yes. There is enough evidence to support the claim that the average bill has increased from $50.07.

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