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Playing video and computer games is very popular. Over 70% of households play such games. Of those individuals who play video and computer games, 18% are under 18 years old, 53% are 18–59 years old, and 29% are over 59 years old ( The Wall Street Journal, March 6, 2012). a. For a sample of 800 people who play these games, how many would you expect to be under 18 years of age? b. For a sample of 600 people who play these games, what is the probability that fewer than 100 will be under 18 years of age? c. For a sample of 800 people who play these games, what is the probability that 200 or more will be over 59 years of age?

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STATISTICS F/BUSINESS+ECONOMICS-TE...

13th Edition
Anderson
Publisher: CENGAGE L
ISBN: 9781305881884

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BuyFindarrow_forward

STATISTICS F/BUSINESS+ECONOMICS-TE...

13th Edition
Anderson
Publisher: CENGAGE L
ISBN: 9781305881884
Chapter 6.3, Problem 30E
Textbook Problem
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Playing video and computer games is very popular. Over 70% of households play such games. Of those individuals who play video and computer games, 18% are under 18 years old, 53% are 18–59 years old, and 29% are over 59 years old (The Wall Street Journal, March 6, 2012).

  1. a. For a sample of 800 people who play these games, how many would you expect to be under 18 years of age?
  2. b. For a sample of 600 people who play these games, what is the probability that fewer than 100 will be under 18 years of age?
  3. c. For a sample of 800 people who play these games, what is the probability that 200 or more will be over 59 years of age?

a.

To determine

Find the expected number of people less than 18 years of age play these games.

Explanation of Solution

Calculation:

Playing computer and video games are very famous. The 70% of households play these games. By individually, 18% of people fewer than 18 years, 53% of people of 18-59 years and 29% of people of 59 years old are playing these games.

The sample size is 800 people...

b.

To determine

Find the probability of fewer than 100 people will play the game less than 18 years of age.

c.

To determine

Find the probability of 200 or more than people will play the game over 59 years of age.

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Chapter 6 Solutions

STATISTICS F/BUSINESS+ECONOMICS-TEXT
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