A bakery is considering buying one of two gas ovens. The bakery requires that the temperature remain constant during a baking operation. A study was conducted to measure the variance in temperature of the ovens during the baking process. The variance in temperature before the thermostat restarted the flame for the Monarch oven was 2.4 for 16 measurements. The variance for the Kraft oven was 3.2 for 12 measurements. Does this information provide sufficient reason to conclude that there is a difference in the variances for the two ovens? Assume measurements are normally distributed and use a 0.02 level of significance.
Answer to relevant QuestionsGiven this set of paired data: Find: a. The paired differences, d = A = B for this set of data b. The mean of the paired differences c. The standard deviation sd of the paired differences The data that follow are from two random samples of 37 college males and 42 college females with respect to their commute times to e. a. Do the distributions of “commute time” for males and females appear to be similar ...It was stated in this section that the F-test is very sensitive to minor departures from the assumptions. Repeat Exercise 10. 139 using N(100, 20) and N(120, 30). Notice that the only change from Exercise 10. 139 is the ...a. Find the 95% confidence interval for m d given n = 26 d = 6.3 and sd = 5.1 Assume the data are randomly selected from a normal population. b. Compare your interval to the interval found in Example10. 4. To compare the merits of two short-range rockets, 8 of the first kind and 10 of the second kind are fired at a target. If the first kind has a mean target error of 36 feet and a standard deviation of 15 feet and the second ...
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