Q1) A researcher claims that the standard deviation of the ages of cats is smaller than that for dogs. A random sample of 29 cats has a standard deviation of 2.7 years and a random sample of 16 dogs has a standard deviation of 3.5 years. Test the claim at Alpha = .05.
Q2) A bakery is considering buying one of two new ovens and the oven must maintain a constant temperature during a baking operation. A study was done to compare the variance in temperatures between the two ovens. The variance in temperature before the thermostat restarted the flame in oven #1 was 2.4 for 16 measurements and for oven #2 it was 3.2 for 12 measurements. At Alpha = 0.01, can we conclude that the variances are different?