According to one study, brain weights of men are normally distributed with a mea

Question

According to one study, brain weights of men are normally distributed with a mean of 1.30 kg and a standard deviation of 0.14 kg. Use the data to answer questions (a) through (e) (Round to four decimal places as needed) c. Construct a graph of the normal population distribution and the two sampling distributions for brain weights. Choose the correct graph below. O A. OC. Pop n-12 n-3 :n-3 d. Determine the percentage of all samples of three men that have mean brain weights within 0.1 kg of the population mean brain weight of 1.30 kg. Round to two decimal places as needed.) Enter your answer in the answer box and then click Check Answer part Clear All Check Answer

Explanation / Answer

Ans:

d)standard error of mean=0.14/sqrt(3)=0.0808

z=+/-0.1/0.0808=+/-1.237

P(-1.237<z<1.237)=P(z<1.237)-P(z<-1.237)=0.8920-0.1080=0.7840 or 78.40%

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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