# Question: In a national survey conducted by the Centers for Disease

In a national survey conducted by the Centers for Disease Control to determine health-risk behaviors among college students, college students were asked, “How often do you wear a seat belt when driving a car?” The frequencies were as follows:

Response ....... Frequency

I do not drive a car ... 249

Never ......... 118

Rarely ......... 249

Sometimes ...... 345

Most of the time .... 716

Always ........ 3093

(a) Construct a relative frequency distribution.

(b) What percentage of respondents answered “Always”?

(c) What percentage of respondents answered “Never” or “Rarely”?

(d) Construct a frequency bar graph.

(e) Construct a relative frequency bar graph.

(f ) Construct a pie chart.

(g) Compute the relative frequencies of “Never,” “Rarely,” “Sometimes,” “Most of the time,” and “Always,” excluding those that do not drive. Compare with those in Problem 13. What might you conclude?

(h) Suppose that a representative from the Centers for Disease Control says, “2.5% of the college students in this survey responded that they never wear a seat belt.” Is this a descriptive or inferential statement?

Response ....... Frequency

I do not drive a car ... 249

Never ......... 118

Rarely ......... 249

Sometimes ...... 345

Most of the time .... 716

Always ........ 3093

(a) Construct a relative frequency distribution.

(b) What percentage of respondents answered “Always”?

(c) What percentage of respondents answered “Never” or “Rarely”?

(d) Construct a frequency bar graph.

(e) Construct a relative frequency bar graph.

(f ) Construct a pie chart.

(g) Compute the relative frequencies of “Never,” “Rarely,” “Sometimes,” “Most of the time,” and “Always,” excluding those that do not drive. Compare with those in Problem 13. What might you conclude?

(h) Suppose that a representative from the Centers for Disease Control says, “2.5% of the college students in this survey responded that they never wear a seat belt.” Is this a descriptive or inferential statement?

## Answer to relevant Questions

The Gallup organization conducted a survey in which 1025 randomly sampled adult Americans were asked, “How much time, if at all, do you personally spend using the Internet—more than 1 hour a day, up to 1 hour a day, a ...Automotive is a major supplier of paint to the automotive industry. A survey of 100 randomly selected autos in the luxury car segment and 100 randomly selected autos in the sports car segment that were recently purchased ...The following data represent the land area and highest elevation for each of the seven continents. (a) Would it make sense to draw a pie chart for land area? Why? If so, draw a pie chart. (b) Would it make sense to draw a ...For each variable presented, state whether you would expect a histogram of the data to be bell-shaped, uniform, skewed left, or skewed right. Justify your reasoning. (a) Number of alcoholic drinks consumed per week (b) Ages ...Legend: 1|2 represents 1.2 Determine the original set of data.Post your question