Explanation Given: The number of adults in the United States within each of four age group who own smartphones is given in the table below, Age (in years) 18 − 29 30 − 49 50 − 64 65 + Number of Owners (in thousands) 25 , 115 54 , 157 16 , 310 14 , 509 Let, the random variable X denotes the values 1, 2, 3 and 4, corresponding to the age group 18 − 29 , 30 − 49 , 50 − 64 , and 65 + , respectively. Approach: The probability of an event E is as follows. P ( E ) = n ( E ) n ( S ) … (1) Here, P ( E ) is the probability of the event E , n ( E ) is the number of favorable outcomes for E and n ( S ) is the total number of outcomes. Calculation: Find the total number of outcomes from the given data as follows, n ( S ) = ( 25 , 115 + 54 , 157 + 16 , 310 + 14 , 509 ) × 10 3 = 110 , 091 , 000 Substitute 25 , 115000 for n ( E ) and 110 , 091 , 000 for n ( S ) in the equation (1) to find the probability associated with the age group which has 1 value X ( X = 1 ) , To determine b) To find: The probability of a smartphone owner that he or she is between 18 and 49 years age.

11th Edition

ISBN: 9780100478183

Author: Tan

Publisher: YUZU

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Chapter 8.1, Problem 29E

To determine

a)

To find:

The probability distribution associated with the given data.

To determine

b)

To find:

The probability of a smartphone owner that he or she is between 18 and 49 years age.

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Chapter 8.1, Problem 28E

Chapter 8.1, Problem 30E

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a) To find: The probability distribution associated with the given data.

Solution Summary: The author explains the probability distribution associated with the given data.