Mathematics: According to a poll, 83% of california adults (418 out of 506 surveyed) feel that education 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 is one of the top issues facing california. what is a point estimate for the true population proportion?

According to a poll, 83% of california adults - id834183700124, lordined5256

Ответ:

gungamer720

09.01.2022

A point estimate for the true population proportion is $\hat{p} = 0.83$ and the 90% confidence interval is (0.8025, 0.8575)

Step-by-step explanation:

We have a large sample of people of size n = 506. Let X be the random variable that represents the number of adults who feel that education is one of the top issues facing California. We are interested in the unknown true proportion p of adults who feel that education is one of the top issues facing California. A point estimate for the true population proportion is given by $\hat{p}$ = X/n = 418/506 = 0.83, the standard deviation is given by $\sigma_{\hat{p}} = \sqrt{p(1-p)/n}\approx\sqrt{\hat{p}(1-\hat{p})/n} = \sqrt{(0.83)(0.17)/506} = 0.0167$ . Therefore, the 90% confidence interval for the true population proportion is $\hat{p}\pm z_{0.1/2}\sqrt{\hat{p}(1-\hat{p})/n}$ , i.e., $0.83\pm z_{0.05}0.0167$ , i.e., $0.83\pm (1.6448)(0.0167)$ , (0.8025, 0.8575).

0,0(0 оценок)

Ответ:

maggiestevens5321

11.09.2021

Mathematics

False the vector difference between first two points is (3,,3)=(2,2) the vector difference between second two points is (4,,5)=(1,2) vectors (2,2) and (1,2) are not parallel so: false

0,0(0 оценок)

Ответ:

Ответ:

Ask your question to the AI advisor

More tips

Answers on questions: Mathematics

Ask an AI advisor a question