Test the claim that the mean GPA of night students is smaller than the mean GPA of day students at the 0.10 significance level. The null and alternative hypothesis would be: Ho: Px = PD Ho:HN = Hp Hạ:Hx = HD He:PN = PD Ho:HN = Hp Ho:PN = PD H :Py + PD H:N HD H:HN < HD H Py < Pp H,: > Hp H PN > PD The test is: right-tailed left-tailed two-tailed The sample consisted of 50 night students, with a sample mean GPA of 2.1 and a standard deviation of 0.06, and 50 day students, with a sample mean GPA of 2.12 and a standard deviation of 0.03. The test statistic is: (to 2 decimals) The p-value is: (to 2 decimals) Based on this we: OFail to reject the null hypothesis O Reject the null hypothesis

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Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.