The manager of an assembly process wants to determine whether or not the number of defective articles manufactured depends on the day of the week the articles are produced. She collected the following information. Is there sufficient evidence to reject the hypothesis that the number of defective articles is independent of the day of the week on which they are produced? Use ? = 0.01. Day of Week       M     Tu     W     Th     F Nondefective 87 93 99 99 92 Defective 11 6 3 3 9 (a

o compute a student's Grade Point Average (GPA) for a term, the student's grades for each course are weighted by the number of credits for the course. Suppose a student had these grades:3.8 in a 5 credit Math course2.2 in a 2 credit Music course2.5 in a 5 credit Chemistry course3.4 in a 4 credit Journalism courseWhat is the student's GPA for that term? Round to two decimal places. Student's GPA =

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You are conducting a Goodness of Fit hypothesis test for the claim that the 4 categories occur with the following frequencies:  H0 : pA=0.3;  pB=0.2;  pC=0.2;  pD=0.3  Give all answers as decimals rounded to 3 places after the decimal point, if necessary. Complete the table: Category ObservedFrequency ExpectedFrequency A 30 Correct B 25 Correct C 20 Correct D 34 Correct What is the chi-square test-statistic for this data? Test Statistic: χ2= Correct For a significance of level alpha = 0.01, what is the chi-square critical value? Critical Value: χ2= Incorrect What would be the decision of this hypothesis test? Fail to reject H0   Reject H0   Correct   Remember to round all answers to 3 places after the decimal point, if necessary.