Test the claim that the mean GPA of night students is larger than 2.2 at the .10 significance level. The null and alternative hypothesis would be: Ho:p = 0.55 Ho: u = 2.2 Ho:u = 2.2 Ho:µ = 2.2 Ho:p = 0.55 Ho:p = 0.55 H1:p+ 0.55 H1:µ + 2.2 H1: µ > 2.2 H1:p < 2.2 H1:p > 0.55 H1:p < 0.55 The test is: left-tailed two-tailed right-tailed Based on a sample of 75 people, the sample mean GPA was 2.23 with a standard deviation of 0.07 The test statistic is: (to 2 decimals) The critical value is: (to 2 decimals) Based on this we: O Fail to reject the null hypothesis O Reject the null hypothesis

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.