Suppose that the sample mean is & = 31.11, that it is known that o = 34.510, and that the sample size n = 841. We want a90% confidence level for the true mean u.What is the estimate of the lower end point? (Round to 3 digits after the decimal point.)What is the estimate of the upper end point? (Round 3 digits after the decimal point.)Suppose that the sample mean is &= 39.22, that it is known that a = 32.400, and that the sample size n=729. We want a90% confidence level for the true mean u.What is the estimate of the lower end point? (Round to 3 digits after the decimal point.)What is the estimate of the upper end point? (Round 3 digits after the decimal polnt.)

Since, you have asked multiple question, we will solve the first question for you. If you want any…

Answered: Suppose that the sample mean is &…

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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Similar questions

What is the probability for a z-score of 1.597 What is the confidence interval for a study if the margin of error is 2.35 and your point of estimates is 5.50.
Suppose the researcher decided to find 95% confidence interval for the mean working hours based on the collected sample.
A random sample of 100 employees at a company shows that 62 are female. Form a 90% confidence interval for the proportion of all employees who are female. The interval is 0.62 what margin of error? Round your answer to 3 decimal places.
Which of the following t values would be used to construct a 99% confidence interval for the mean with a sample of size n=17?
Suppose you work for the Department of Environment and National Resources (DENR). You want to estimate, with 95% confidence, the mean length of all tilapia in a fish hatchery pond. You take a random sample of 10 tilapia and determine the average length is 10.5 inches and the sample standard deviation is 2.9 inches. Construct a confidence interval for this sample and interpret the result.
Abe and Betty want to estimate the mean of a population with known standard deviation o. Abe takes 50 samples whereas Betty takes 80 samples. Which of the following statements are correct? (A) If both Abe and Betty use confidence intervals of the same width, then the confidence level of Abe's interval is smaller than that of Betty's (B) If both Abe and Betty use confidence intervals of the same width, then the confidence level of Abe's interval is larger than of Betty's (C) If Abe and Betty construct confidence intervals with the same confidence level, then the width of Abe's interval is smaller than that of Betty's (D) If Abe and Betty construct confidence intervals with the same confidence level then the width of Abe's interval is larger than that of Betty's (B) and (C). (A) and (D) (B) and (D) (A) and (C)
Suppose we know that a confidence interval for a population proportion is (0.105,0.355), with a sample proportion of p̂=0.23. What is the margin of error?
3 see picture
Suppose the population standard deviation is = 5, an SRS of n = 100 is obtained, and the confidence level is chosen to be 99.5%. The margin of error for estimating a mean is given by: a. 1.576. b. 1.165. c. 1.404. d. 1.223.
Q3. A business man want to decide about the hair-cut prices and so he decided to know the mean time spet on hair-cuts. He has no record of time needed for hair-cut. He wanted a max error of +0.2. He took a sample of size 30 and found that s= 1.5 min. Find the sample size needed to achieve the 95% confidence level.
Researchers studied the mean egg length (in millimeters) for a bird population. After taking a random sample of eggs, they obtained a 95% confidence interval of (45,60). What is the value of the margin of error? Choose the correct answer below. A. 15 mm B. 52.5 mm O c. 7.5 mm O D. 1.96
If n 180 and p (p-hat) =0.07, find the margin of error at a 95% confidence level. Round to 4 places. Z-scores may be rounded to 3 places or exact using technology.

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