Suppose that a random sample of 16 recently sold houses in a certain city has a mean sales price of $280,000, with a standard deviation of $11,000. Under the assumption that house prices are normally distributed, find a 90% confidence interval for the mean sales price of all houses in this city. Give the lower limit and upper limit of the 90% confidence interval. Carry your intermediate computations to at least three decimal places. Round your answers to the nearest whole number. (If necessary, consult a list of formulas.) Lower limit: S Upper limit: $ X
Suppose that a random sample of 16 recently sold houses in a certain city has a mean sales price of $280,000, with a standard deviation of $11,000. Under the assumption that house prices are normally distributed, find a 90% confidence interval for the mean sales price of all houses in this city. Give the lower limit and upper limit of the 90% confidence interval. Carry your intermediate computations to at least three decimal places. Round your answers to the nearest whole number. (If necessary, consult a list of formulas.) Lower limit: S Upper limit: $ X
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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SLICE NAME
Confidence Intervals and Hypothesis Testing
TOPIC NAME
Confidence interval for the population mean: Use of the t distribution
Expert Solution
Step 1
We have given that
Sample size (n) = 16
Sample mean (x̅) = 280000
Standard deviations (s) = 11000
Confidence level (c) = 90% = 0.90
Significance level (α) = 1- 0.90 = 0.10
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