Homework: practice problems-module 12 Score: 0 of 1 pt 7.3.35 Save | 4 of 4 (1 c

Question

Homework: practice problems-module 12 Score: 0 of 1 pt 7.3.35 Save | 4 of 4 (1 complete) ? Hw Score: 25%, 1 of 4 pts Question Help * Research from other sources Using the simple random sample of weights of women from a data set, we obtain these sample statistics: n.50 and x-14528 íb suggests that the population of weights of women has a standard deviation given by ?-32.57 b. a. Find the best point estimate of the mean weight of all women. b. Find a 99% confidence interval estimate of the mean weight of all women. Click here to view a t distribution table. Click here to view page 1 of the standard normal distribution table to view page 2 of the standard normal distribution table a. The best point estimate is b. Type an integer or a decimal)

Explanation / Answer

n=50

xbar=145.28

s=32.57lb

a.

the best point estimate of the mean weight of all women = x

= 145.28

b.

Given a=0.05, Z(0.025)=1.96 (from standard normal table)

So 95% confidence interval is

xbar+/- Z*s/vn

-> 145.28+/- 1.96*32.57/sqrt(50)

--> (136.2520,154.3079 )

any doubts please leave your comments. otherwise please rate my answer.

thanks

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.