What is the critical Fvalue for a sample of 8 observations in the numerator and 8 in the denominator? Use a two-tailed test and the 0.02 significance level. (Round your answer to 2 decimal places.) F= (2dp)
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- You want to compare differences in prior arrests across ethnicity in your study, you measured ethnicity as white =0 black =1 hispanic=2, and other =3. Prior arrests was recorded as the number of prior arrests. which test would you perform to see if arrests differ across diffrent ethnic categories? A. ANOVA B. T-testEspañol A coin-operated coffee machine made by BIG Corporation was designed to discharge a mean of 7.2 ounces of coffee per cup. BIG has good reason to believe that the mean amount of coffee dispensed by the machine, u, is greater than 7.2 ounces, and plans to do a statistical test of the claim that the machine is working as designed. Technicians gather a random sample of fill amounts and find that the mean of the sample is 7.6 ounces and that the standard deviation is 0.5 ounces. Based on this information, complete the parts below. (a) What are the null hypothesis H. and the alternative hypothesis H, that should be used for the test? Ho :0 OA researcher believes that low BMI levels are indicators of eating disorders. He collects BMI of a sample of young adults identified as at risk for eating disorfers to see if their mean BMI is significantly below 18.5 What test would you use and why? (z test, independent t test, single sample t test, paired samples)The strength test carried out on samples of two yarns spun to the same count gave the following results Sample size Sample mean Sample Variance Yarn A 4 52 42 Yarn B 9 42 56 The strengths are expressed in pounds. Is the difference in mean strength significant of sources from which the sample are drawn?the night shift workers in three of the super bo's specialty stores stock about 500 products in about 3 hours. how does the rate compare with the stocking done in the other 97 stores in the chain, whixh average about 496 products stocked in 3 hours? are the stockers at the specialty stores doing "better than Average" job? heres the info you need size. products stocks standard deviation specialty stores 3. 500. 12.56 all stores. 100. 496. 22.13Need help with C and D pleaseSEE MORE QUESTIONS