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Test the claim that the mean GPA of Orange Coast students is significantly different than the mean GPA of Coastline students at the 0.1 significance level. The null and alternative hypothesis would be The test is: left-tailed right-tailed two-tailed The sample consisted of 45 Orange Coast students, with a sample mean GPA of 2.77 and a standard deviation of 0.07, and 45 Coastline students, with a sample mean GPA of 2.75 and a standard deviation of 0.02 The test statistic is (to 2 decimals) The p-value is (to 2 decimals) Based on this we: OFail to reject the null hypothesis OReject the null hypothesis
Two samples are taken with the following sample means, sizes, and standard deviations X1 = 26 2 = 29 n1 48 n2 58 81=482=5 Estimate the difference in population means using a 99% confidence level. Use a calculator, and do NOT pool the sample variances. Round answers to the nearest hundredth ( -5.252 )丼く141-12 <(-748 )丼
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Soluten Letruo be the Mean 4PA of ooange-Coaat tudents 4-- ac-be the mean GpA of Coastline Students want to test 1/ VIS li-Teat . The test is too tailed ALSo given -_-)-8 433 0 0108S The test statishc 15 84 0.06528l Be oo this e Rejeck the oull hy pothesis #Ilco e have d = 0:01 npopulahion means is n2 18 S8 C-3-2.50チ6 -.-3 +2.st 76 ) 0.4324)

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