An agency collects demographics concerning the number of people in families per household in a certain country. Assume the distribution of the number of people per household is as shown in the table to the right. P(x) O 0.25 3 0.25 a. Calculate the expected number of people in families per household in the country. b. Compute the standard deviation of the number of people 4 0.30 families per household. 0.13 0.05 0.02 7 a. The expected number of people in families per household isN. (Type an integer or a decimal.) b. The standard deviation of the number of people in families per household is (Type an integer or decimal rounded to four decimal places as needed.)

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An agency collects demographics concerning the number of people in families per household in a certain country. ASsume the distribution of the number of people per household is as
shown in the table to the right.
P(x) D
0.25
0.25
a. Calculate the expected number of people in families per household in the country.
b. Compute the standard deviation of the number of people in families per household.
0.30
0.13
0.05
0.02
a. The expected number of people in families per household is
(Type an integer or a decimal.)
b. The standard deviation of the number of people in families per household is
(Type an integer or decimal rounded to four decimal places as needed.)
Enter your answer in each of the answer boxes.
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Transcribed Image Text:An agency collects demographics concerning the number of people in families per household in a certain country. ASsume the distribution of the number of people per household is as shown in the table to the right. P(x) D 0.25 0.25 a. Calculate the expected number of people in families per household in the country. b. Compute the standard deviation of the number of people in families per household. 0.30 0.13 0.05 0.02 a. The expected number of people in families per household is (Type an integer or a decimal.) b. The standard deviation of the number of people in families per household is (Type an integer or decimal rounded to four decimal places as needed.) Enter your answer in each of the answer boxes. MacBook Pro 80 888 A> 000 esc @ 2$ 1 2 3 4 5 7 8 9 Q W E T. Y U P X234 567
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