Question

Don’t call me In a September 28, 2008, article titled “Letting Our Fingers Do the Talking,” the New York Times reported that Americans now send more text messages than they make phone calls. According to a study by Nielsen Mobile, “Teenagers ages 13 to 17 are by far the most prolific texters, sending or receiving 1,742 messages a month.” Mr. Williams, a high school statistics teacher, was skeptical about the claims in the article. So he collected data from his first-period statistics class on the number of text messages and calls they had sent or received in the past 24 hours. Here are the texting data: $\begin{array}{lllllllllll}{0} & {7} & {1} & {29} & {25} & {8} & {5} & {1} & {25} & {98} & {9} & {0} & {26} \\ {8} & {118} & {72} & {0} & {92} & {52} & {14} & {3} & {3} & {44} & {5} & {42} \\ \hline\end{array}$ (a) Make a boxplot of these data by hand. Be sure to check for outliers. (b) Do these data support the claim in the article about the number of texts sent by teens? Justify your answer with appropriate evidence.

          Don’t call me In a September 28, 2008, article titled “Letting Our Fingers Do the Talking,” the New York Times reported that Americans now send more text messages than they make phone calls. According to a study by Nielsen Mobile, “Teenagers ages 13 to 17 are by far the most prolific texters, sending or receiving 1,742 messages a month.” Mr. Williams, a high school statistics teacher, was skeptical about the claims in the article. So he collected data from his first-period statistics class on the number of text messages and calls they had sent or received in the past 24 hours. Here are the texting data:
$\begin{array}{lllllllllll}{0} & {7} & {1} & {29} & {25} & {8} & {5} & {1} & {25} & {98} & {9} & {0} & {26} \\ {8} & {118} & {72} & {0} & {92} & {52} & {14} & {3} & {3} & {44} & {5} & {42} \\ \hline\end{array}$
(a) Make a boxplot of these data by hand. Be sure to check for outliers.
(b) Do these data support the claim in the article about the number of texts sent by teens? Justify your answer with appropriate evidence.

Added by James S.

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