Assume that a sample is used to estimate a populationmean u. Find the 90% confidence interval for a sample ofsize 56 with a mean of 19.4 and a standard deviation of17.9. Enter your answer as an open-interval (i.e.,parentheses) accurate to 3 decimal places.90% C.I.=The answer should be obtained without any preliminaryrounding.

The sample size is 56, the sample mean is 19.4 and the sample standard deviation is 17.9.

Answered: Assume that a sample is used to…

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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Assume that a sample is used to estimate a populatton mean u. Find the 95% confidence interval for a sample of size 45 with a mean of 35.9 and a standard deviation of 16.6. Enter your answer as an open- interval (i.e., parentheses) accurate to 3 decimal places. 95% C.I. The answer should be obtained without any preliminary rounding. Submit Question
A statistics class is estimating the mean height of all female students at their college. They collect a random sample of 42 female students and measure their heights. The mean of the sample is 65.3 inches and the sample standard deviation is 5.4 inches. Find the 90% confidence interval for the mean height of all female students in their school? Assume that the distribution of individual female heights at this school is approximately normal. 1. The t value is 1.3025 2. The standard error has a value of -- 3. The margin of error has a value of 4. Find the 90% confidence interval for the mean height of all female students in their school

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