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Test the claim that the mean GPA of night students is significantly different than 2.9 at...

Test the claim that the mean GPA of night students is significantly different than 2.9 at the 0.1 significance level.

Based on a sample of 20 people, the sample mean GPA was 2.87 with a standard deviation of 0.06

The test statistic is (to 3 decimals)

The positive critical value is  (to 3 decimals)

Based on this we

  • fail to reject the null hypothesis
  • reject the null hypothesis
Math   Statistics-And-Probability   
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Homework Answers

Answer #1

from above:

The test statistic is =-2.236

The positive critical value is 1.729

Based on this we

  • reject the null hypothesis
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