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Chapter 8: Q.125 (page 491)

Use the following information to answer the next three exercises: According to a Field Poll, 79% of California adults (actual results are 400 out of 506 surveyed) feel that 鈥渆ducation and our schools鈥� is one of the top issues facing California. We wish to construct a 90% confidence interval for the true proportion of California adults who feel that education and the schools are one of the top issues facing California.

A point estimate for the true population proportion is:

a. 0.90

b. 1.27

c. 0.79

d. 400

Short Answer

Expert verified

A point estimate for the true population proportion is (c)0.79

Step by step solution

01

Given Information

The per cent of California adults feel that 鈥渆ducation and our schools鈥� is one of the top issues facing California =79%

confidence interval =90%

02

Explanation

Sample proportion can be used for the true population proportion to find a point estimate.

Point estimate =No.ofsuccessesNo.oftrials=400509=0.79

A point estimate for the true population proportion is 0.79

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Most popular questions from this chapter

Among various ethnic groups, the standard deviation of heights is known to be approximately three inches. We wish

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I. X=________

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