QUESTION 23A Hi-Tech company has introduced a new fash disk. Some dealers and customers have complained that some of the new disks aredefective. In order to investigate this the company randomly tested 300 disks and found that 30 were defective. A 99% confidence intervalfor the proportion of all fash disks that are defective was (5.54%, 14.46%). Which one of the following statements is the correctinterpretation of the results?We are 99% confident that (5.54%, 14.46%) contains the true population proportion.O None of these are true.O With probability 99%, the confidence interval (5.54%, 14.46%) contains the true population proportion.Of all the fash disks 99% of the fash disks in the sample are defective between 5.54% and 14.46%.

A confidence interval is the interval which has certain probability to include the unknown…

Answered: A Hi-Tech company has introduced a new…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A sample of freshman takes a reading comprehension test and their scores are summarized below. Sample scores: 16, 8, 8, 6, 9, 11, 13, 9, 10 a. if the mean for the general population on this test is m=12, can you conclude that this sample is significantly different from the population. Test with a=.05 b. Calculate a 90% confidence interval around your mean.
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A beverage company would like to determine if their drink is preferred to a rival company’s drink. They perform an experiment with 150 randomly selected individuals and have them taste test the two different drinks in a controlled environment so that each person's preference is independent of others. A 90% confidence interval for the proportion preferring their drink is (0.453, 0.587). Which of the following is the correct interpretation of this confidence interval? 90% of all consumers prefer this beverage company’s drink to their rival’s between 45.3% and 58.7% of the time. We’re 90% confident that between 45.3% and 58.7% of all consumers would prefer this beverage company’s drink to their rival’s drink. We’re 90% confident that there’s a 45.3% to 58.7% chance that a randomly selected person would prefer this beverage company’s drink to their rival’s drink. We’re 90% confident that the proportion of people in the sample who prefer this beverage company’s drink over their…
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