"Use the Internet? 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 few times a week, a few times a month or less, or never?” The results of the survey were as follows:

a. Construct a relative frequency distribution."

Use the relative frequency histogram to describe any patterns with the data.

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In Exercises 1 and 2, use the data set, which represents the overall average class sizes for 20 national universities. (Adapted from Public University Honors)

37 34 42 44 39 40 41 51 49 31

52 26 31 40 30 27 36 43 48 35

Construct a relative frequency histogram using the frequency distribution in Exercise 1. Then determine which class has the greatest relative frequency and which has the least relative frequency.

College Survey 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 riding in a car driven by someone else?” The frequencies were as follows:

a. Construct a relative frequency distribution.

College Survey 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:

a. Construct a relative frequency distribution.

"Online Shopping A random sample of college students was asked, “What social platform most influences your online shopping?” Results are shown below.

b. Construct a relative frequency distribution for females."

"In Problems 21 and 22, find (a) the number of classes, (b) the class limits, and (c) the class width.

Earthquakes The following data represent the magnitude of earthquakes worldwide in October 2018."

Made in America In a recent Harris Poll, a random sample of adult Americans (18 years and older) was asked, “When you see an ad emphasizing that a product is ‘Made in America,’ are you more likely to buy it, less likely to buy it, or neither more nor less likely to buy it?” The results of the survey, by age group, are presented in the contingency table below.

a. How many adult Americans participated in the survey? How many of them were age 55 or older?

b. Create a relative frequency marginal distribution.