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Chapter 8: Q.129 (page 491)

Use the following information to answer the next two exercises: Five hundred and eleven (511) homes in a certain southern California community are randomly surveyed to determine if they meet minimal earthquake preparedness recommendations. One hundred seventy-three (173) of the homes surveyed met the minimum recommendations for earthquake preparedness, and 338 did not.

The point estimate for the population proportion of homes that do not meet the minimum recommendations for earthquake preparedness is ______.

a. 0.6614

b. 0.3386

c. 173

d. 338

Short Answer

Expert verified

The point estimate for the population proportion of homes that do not meet the minimum recommendations for earthquake preparedness is (b)0.3386

Step by step solution

01

Introduction

The number of homes surveyed met the minimum recommendations for earthquake preparedness = 173

The number of homes surveyed doesn't meet the minimum recommendations for earthquake preparedness =338.

02

Explanation

Calculating the point estimate = HousesthatmettheearthquakepreparednessNo.ofhousessurveyed

The number of homes surveyed met the minimum recommendations for earthquake preparedness = 173

Total number of houses surveyed = 511

Hence the point estimate is = role="math" localid="1653890892269" 173511=0.3386

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Most popular questions from this chapter

The mean age for all Foothill College students for a recent Fall term was 33.2. The population standard deviation has been pretty consistent at 15. Suppose that twenty-five Winter students were randomly selected. The mean age for the sample was 30.4. We are interested in the true mean age for Winter Foothill College students. Let X=the age of a Winter Foothill College student.

role="math" localid="1648388299408" x炉=_____

If it were later determined that it was important to be more than 90% confident and a new survey was commissioned, how would it affect the minimum number you need to survey? Why?

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