You wish to test the following claim at a significance level of 0.05.      H0:μ=68.3H0:μ=68.3       H1:μ>68.3H1:μ>68.3You believe the population is normally distributed, but you do not know the standard deviation. You obtain a sample of size 125 with a mean of 70.3 and a standard deviation of 13.1.What is the critical value for this test? (Report answer accurate to 3 decimal places.) What is the test statistic for this sample? (Report answer accurate to 3 decimal places.) The test statistic is in the critical region not in the critical region This test statistic leads to a decision to reject the null accept the null fail to reject the null As such, the final conclusion is that there is sufficient evidence to conclude that the population mean is equal to 68.3. there is not sufficient evidence to conclude that the population mean is equal to 68.3. there is sufficient evidence to conclude that the population mean is greater than 68.3. there is not sufficient evidence to conclude that the population mean is greater than 68.3.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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You wish to test the following claim at a significance level of 0.05.

      H0:μ=68.3H0:μ=68.3
      H1:μ>68.3H1:μ>68.3

You believe the population is normally distributed, but you do not know the standard deviation. You obtain a sample of size 125 with a mean of 70.3 and a standard deviation of 13.1.

What is the critical value for this test? (Report answer accurate to 3 decimal places.)


What is the test statistic for this sample? (Report answer accurate to 3 decimal places.)


The test statistic is

  • in the critical region
  • not in the critical region



This test statistic leads to a decision to

  • reject the null
  • accept the null
  • fail to reject the null



As such, the final conclusion is that

  • there is sufficient evidence to conclude that the population mean is equal to 68.3.
  • there is not sufficient evidence to conclude that the population mean is equal to 68.3.
  • there is sufficient evidence to conclude that the population mean is greater than 68.3.
  • there is not sufficient evidence to conclude that the population mean is greater than 68.3.
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