Q 93. Texts or calls? Refer to Exercis... [FREE SOLUTION]

91影视

The Practice of Statistics for AP

David Moore,Daren Starnes,Dan Yates

$Math Studyset 91影视 Explanations$ Math

4th Edition 路 809 pages

ISBN: 9781319113339

Chapter 1: Q 93. (page 71)

Texts or calls? Refer to Exercise 91. A boxplot of the difference (texts 鈥� calls) in the number of texts and calls for each student is shown below.
(a) Do these data support the claim in the article about texting versus calling? Justify your answer with appropriate evidence.
(b) Can we draw any conclusion about the preferences of all students in the school based on the data from Mr. Williams鈥檚 statistics class? Why or
why not?

Short Answer

Expert verified

Part (a) The claim of the article about texting versus calling is not supported

Part Part (a) Step 1: Given information(b) We cannot make a conclusion.

Step by step solution

Part (a) Step 1: Given information

Given:

Part (a) Step 2: Concept

A boxplot is a frequent data analysis graph.

Part (a) Step 3: Explanation

We may conclude from the box-plot showing the difference in the number of texts and calls for each student that the article's assertion about texting versus phoning is unsupported because the minimum value of the difference is negative, implying that these people call more than they text. There is also a trend to text more than call, although it is not as serious as the study claims. Only a few people text more than they call.

Part (b) Step 1: Explanation

It is impossible to draw a conclusion regarding the preferences of all students because many students prefer to call over text, but many students prefer to text over call. As a result, the data yields mixed outcomes. There is a trend among students to text rather than phone, but this trend is not as strong as the data suggests, with a few outliers.