It has been estimated that only about 30% of California residents have adequate earthquake supplies. Suppose you randomly survey 14 California residents. We are interested in the number who have adequate earthquake supplies. Choose the appropriate random variable X. the number of earthquakes in CAthe number of people in CAthe cost for all the earthquake supplies in CAthe number of residents who have adequate earthquake supplies in the survey.List the values that X may take on. 10%, 20%, 30%1, 2, 3…., 100,0000, 1, 2, 3….,141, 2, 3….,14 Give the distribution of X. X ~ _____(_____,_____) How many residents do you expect will have adequate earthquake supplies in this survey? A.2.9 B. 3.8 C. 3.3 D. 3.6 E. 4.2 What is the probability that exactly seven residents who participate the survey have adequate earthquake supplies? 0.029 B. 0.031 C. 0.025 D. 0.062 E. 0.5

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Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter6: Ratio, Proportion, And Probability

Section6.7: Probability And Odds

Problem 2C

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It has been estimated that only about 30% of California residents have adequate earthquake supplies. Suppose you randomly survey 14 California residents. We are interested in the number who have adequate earthquake supplies.

Choose the appropriate random variable X.

the number of earthquakes in CA
the number of people in CA
the cost for all the earthquake supplies in CA
the number of residents who have adequate earthquake supplies in the survey.
List the values that X may take on.

10%, 20%, 30%
1, 2, 3…., 100,000
0, 1, 2, 3….,14
1, 2, 3….,14

Give the distribution of X. X ~ _____(_____,_____)

How many residents do you expect will have adequate earthquake supplies in this survey?
A.2.9 B. 3.8 C. 3.3 D. 3.6 E. 4.2

What is the probability that exactly seven residents who participate the survey have adequate earthquake supplies?

0.029 B. 0.031 C. 0.025 D. 0.062 E. 0.5

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