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Testing: H0:μ=24.1 H1:μ≠24.1 Your sample consists of 25 values, with a sample mean of 25.4. Suppose the population standard deviation is known to be 4.6. a) Calculate the value of the test statistic, rounded to 2 decimal places. z=

Testing: H0:μ=24.1 H1:μ≠24.1 Your sample consists of 25 values, with a sample mean of 25.4. Suppose the population standard deviation is known to be 4.6. a) Calculate the value of the test statistic, rounded to 2 decimal places. z=

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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Testing:

H0:μ=24.1
H1:μ≠24.1

Your sample consists of 25 values, with a sample mean of 25.4. Suppose the population standard deviation is known to be 4.6.

a) Calculate the value of the test statistic, rounded to 2 decimal places.
z=

b) At α=0.08, the rejection region is

  • z<-1.75 or z>1.75
  • z<-1.41
  • z>1.75
  • z>1.41
  • z<-1.75
  • z<-1.41 or z>1.41


c) The decision is to

  • Fail to reject the null hypothesis
  • Reject the null hypothesis
  • Accept the alternative hypotheis
  • Accept the null hypothesis


d) Suppose you mistakenly failed to reject the null hypothesis in this problem, what type of error is that?

  • Type II
  • Type I
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