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

Use the given confidence interval to find the margin of error and the sample mean. (7.14,10.84) The sample mean is The margin of error is ... (Type an integer or a decimal.) (Type an integer or a decimal.)
Use the Student's t distribution to find tc for a 0.95 confidence level when the sample is 3. (Round your answer to three decimal places.) USE SALT
A psychiatrist is interested in finding a 98% confidence interval for the tics per hour exhibited by children with Tourette syndrome. The data below show the tics in an observed hour for 11 randomly selected children with Tourette syndrome. Round your decimal 3 places. 1,12,11,6,10,1,4,7,8,1,9 With 98% confidence the population mean number of tics per hour that children with Tourette syndrome exhibit is between ____ and ____ If many groups of 11 randomly selected children with Tourette syndrome are observed, then a different confidence interval would be produced from each group. About ____ percent of these confidence intervals will contain the true population mean number of tics per hour and about ____ percent will not contain the true population mean number of tics per hour.
10.
Assume that all grade-point averages are to be standardized on a scale between 0 and 4. How many grade-point averages must be obtained so that the sample mean is within 0.005 of the population mean? Assume that a 95% range 4-0 confidence level is desired. If using the range rule of thumb, o can be estimated as =1. Does the sample size seem practical? 4 4
Use the given confidence interval to find the margin of error and the sample mean. (15.3,23.7) The sample mean is . (Type an integer or a decimal.) The margin of error is. (Type an integer or a decimal.)
among various ethnic groups, the standard deviation of heights is known to be approximately three inches. We wish to construct a 95% confidence interval for the mean height of males from a certain country. Forty eight males are surveyed from a particular country.. The sample mean is 70 inches. The sample standard deviation is 2.6 inches. construct a 95% confidence interval for the population mean height of males of theis country?
Lexi of Arm End insurance ,was hired to estimate the proportion of patients that had paid their Bill's on time. She took a random sample of 100 such patients and found that 85 of them had paid their Bill's on time. Help her find 96% confidence interval for population proportion. 1. What is the X and is the "n" sample size? What is the point estimate for the population proportion? 2 Estimate the 96% confidence interval for the proportion of people that paid their bills on time . 3 What is the standard error for the population proportion ? 4 The margin of error for the population proportion, is 4%
PLEASE SHOW WORK.
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.
A research scientist wants to know how many times per hour a certain strand of bacteria reproduces. The mean is found to be 7.8 reproductions and the population standard deviation is known to be 2.2 If a sample of 697 was used for the study, construct the 85% confidence interval for the true mean number of reproductions per hour for the bacteria. Round your answers to one decimal place
Use the given confidence interval to find the margin of error and the sample mean. (13.2,20.6) The sample mean is The margin of error is (Type an integer or a decimal ) (Type an integer or a decimal)

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