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The IE Dept. is interested in the mean age of a certain population. A random sample of 10 individuals drawn from the population has a mean of 27. Assuming that the population is approximately normally distributed with variance 20, can we conclude that the mean is different from 30 years ? (a=0.10) 1) What is the null and alternative hypothesis? choose the letter of you answer Blank 1 a Ho : p=30 and Ha :µ< 30 b Ho : µ=30 and Ha :p > 30 c Ho : p=30 and Ha :µ # 30 2) What is the critical region? Choose the letter of you answer Blank 2 a +/- 1.96 b +/- 1.645 c +/- 1.0 d +/- 1.33-1.96 3) What is the computed test statistic? Choose the letter of you answer Blank 3 a Z = -2.12 bT = -2.12 cZ = -0.47 dT = -0.47 4) Can we conclude that the mean is different from 30 years ? Choose the letter of you answer Blank 4 a Yes, we can conclude that the mean is different from 30. b No, we cannot conclude that the mean is different from 30. c Yes, we can conclude that the mean is less than 30. d No, we can conclude that the mean is greater than 30.

The IE Dept. is interested in the mean age of a certain population. A random sample of 10 individuals drawn from the population has a mean of 27. Assuming that the population is approximately normally distributed with variance 20, can we conclude that the mean is different from 30 years ? (a=0.10) 1) What is the null and alternative hypothesis? choose the letter of you answer Blank 1 a Ho : p=30 and Ha :µ< 30 b Ho : µ=30 and Ha :p > 30 c Ho : p=30 and Ha :µ # 30 2) What is the critical region? Choose the letter of you answer Blank 2 a +/- 1.96 b +/- 1.645 c +/- 1.0 d +/- 1.33-1.96 3) What is the computed test statistic? Choose the letter of you answer Blank 3 a Z = -2.12 bT = -2.12 cZ = -0.47 dT = -0.47 4) Can we conclude that the mean is different from 30 years ? Choose the letter of you answer Blank 4 a Yes, we can conclude that the mean is different from 30. b No, we cannot conclude that the mean is different from 30. c Yes, we can conclude that the mean is less than 30. d No, we can conclude that the mean is greater than 30.

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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The IE Dept. is interested in the mean age of a certain population. A random sample of 10 individuals drawn from the population has a mean of 27. Assuming that the population is approximately normally distributed with variance 20, can we conclude that the mean is different from 30 years ? (a=0.10) 1) What is the null and alternative hypothesis? choose the letter of you answer Blank 1 a Ho : u=30 and Ha : µ< 30 b Ho : p=30 and Ha : µ> 30 c Ho: u=30 and Ha:u + 30 2) What is the critical region? Choose the letter of you answer Blank 2 a +/- 1.96 b +/- 1.645 C +/- 1.0 d +/- 1.33-1.96 3) What is the computed test statistic? Choose the letter of you answer Blank 3 aZ = -2.12 bT = -2.12 cZ = -0.47 dT = -0.47 4) Can we conclude that the mean is different from 30 years ? Choose the letter of you answer Blank 4 a Yes, we can conclude that the mean is different from 30. b No, we cannot conclude that the mean is different from 30. c Yes, we can conclude that the mean is less than 30. d No, we can conclude that the mean is greater than 30.
Transcribed Image Text:The IE Dept. is interested in the mean age of a certain population. A random sample of 10 individuals drawn from the population has a mean of 27. Assuming that the population is approximately normally distributed with variance 20, can we conclude that the mean is different from 30 years ? (a=0.10) 1) What is the null and alternative hypothesis? choose the letter of you answer Blank 1 a Ho : u=30 and Ha : µ< 30 b Ho : p=30 and Ha : µ> 30 c Ho: u=30 and Ha:u + 30 2) What is the critical region? Choose the letter of you answer Blank 2 a +/- 1.96 b +/- 1.645 C +/- 1.0 d +/- 1.33-1.96 3) What is the computed test statistic? Choose the letter of you answer Blank 3 aZ = -2.12 bT = -2.12 cZ = -0.47 dT = -0.47 4) Can we conclude that the mean is different from 30 years ? Choose the letter of you answer Blank 4 a Yes, we can conclude that the mean is different from 30. b No, we cannot conclude that the mean is different from 30. c Yes, we can conclude that the mean is less than 30. d No, we can conclude that the mean is greater than 30.
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