Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

QUESTION 1 The rates of return on 7 natural resources mutual funds are given below: 16.83 17.77 14.87 18.88 16.55 14.44 15.89 Suppose that the

image text in transcribed
QUESTION 1 The rates of return on 7 natural resources mutual funds are given below: 16.83 17.77 14.87 18.88 16.55 14.44 15.89 Suppose that the rates are approximately normal. (a) Compute the mean and the standard deviation rate of return of natural resources mutual funds. Round your answer to three decimal places. (b) Calculate the lower confidence limite and the upper confidence limite of the 99% confidence interval for p, the mean rate of For Blank 3 iatural resources mutual funds. Round your answer to three decimal places. QUESTION 2 A Hi-Tech company has introduced a new ash disk. Some dealers and customers have complained that some of the new disks are defective. In order to investigate this the company randomly tested n disks and found that 6.93% were defective. Find the appropriate sample size necessary to achieve a margin of error of 0.056 in order to construct a 97% confidence interval for the proportion of all ash disks that are defective. Round your answer to the nearest integ (whole number). QUESTION 3 A researcher wants to calculate a 95% condence interval for the unknown true proportion of defective resistors off an assembly line. He takes a random sample of 226 resistors, and nds that 38 of them are defective. Find the margin of error to construct the 95% confidence interval? Round your answer to four decimal places. 4 points 4 points 4 points Save Answer Save Answer Save

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Discrete Mathematics, Edition

Authors: Seymour Lipschutz, Marc Lipson

4th Edition

126425881X, 9781264258819

More Books

Students also viewed these Mathematics questions

Question

identify motherboard components part 1

Answered: 1 week ago

Question

8. What values do you want others to associate you with?

Answered: 1 week ago