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A random sample of n measurements was selected from a population with unknown mean u and known standard deviation. Calculate a 90% confidence interval for u for each of the situations given in parts a through e. ...... a. n = 70, x= 26, o2 = 13 ( 25.29 , 26.71) (Round to two decimal places as needed.) b. n = 150, x = 118, o2 = 24 (Round to two decimal places as needed.)

A random sample of n measurements was selected from a population with unknown mean u and known standard deviation. Calculate a 90% confidence interval for u for each of the situations given in parts a through e. ...... a. n = 70, x= 26, o2 = 13 ( 25.29 , 26.71) (Round to two decimal places as needed.) b. n = 150, x = 118, o2 = 24 (Round to two decimal places as needed.)

MATLAB: An Introduction with Applications
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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**Problem Description:** A random sample of \( n \) measurements was selected from a population with an unknown mean \(\mu\) and known standard deviation. Calculate a 90% confidence interval for \(\mu\) for each of the situations given in parts a through e. --- **a.** - Sample size (\( n \)): 70 - Sample mean (\( \bar{x} \)): 26 - Population variance (\( \sigma^2 \)): 13 **Confidence Interval:** \( (25.29, 26.71) \) (Note: Round to two decimal places as needed.) --- **b.** - Sample size (\( n \)): 150 - Sample mean (\( \bar{x} \)): 118 - Population variance (\( \sigma^2 \)): 24 **Confidence Interval:** \( (\underline{\phantom{00}}, \underline{\phantom{00}}) \) (Note: Round to two decimal places as needed.) --- **Instructions:** For each scenario, the confidence interval is provided partially or needs completion. Ensure that all calculations are rounded to two decimal places.
Transcribed Image Text:**Problem Description:** A random sample of \( n \) measurements was selected from a population with an unknown mean \(\mu\) and known standard deviation. Calculate a 90% confidence interval for \(\mu\) for each of the situations given in parts a through e. --- **a.** - Sample size (\( n \)): 70 - Sample mean (\( \bar{x} \)): 26 - Population variance (\( \sigma^2 \)): 13 **Confidence Interval:** \( (25.29, 26.71) \) (Note: Round to two decimal places as needed.) --- **b.** - Sample size (\( n \)): 150 - Sample mean (\( \bar{x} \)): 118 - Population variance (\( \sigma^2 \)): 24 **Confidence Interval:** \( (\underline{\phantom{00}}, \underline{\phantom{00}}) \) (Note: Round to two decimal places as needed.) --- **Instructions:** For each scenario, the confidence interval is provided partially or needs completion. Ensure that all calculations are rounded to two decimal places.
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