Question

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 “education and our schools” 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

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

Step-by-step solution

Given Information

The per cent of California adults feel that “education and our schools” is one of the top issues facing California =$79\%$

confidence interval =$90\%$

Explanation

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

Point estimate =$\frac{\text{No.ofsuccesses}}{\text{No.oftrials}}=\frac{400}{509}=0.79$

A point estimate for the true population proportion is $0.79$