1) Using table G, find the values for CHI-square left and right if alpha = 0.01 and n = 23. 2) Find the 90% confidence interval for the variance and standard deviation if a sample of 15 has a standard...

Stat Assignment 6A 1) Using table G, find the values for CHI-square left and right if alpha = 0.01 and n = 23. 2) Find the 90% confidence interval for the variance and standard deviation if a sample of 15 has a standard deviation of 2.3. Assume the variable is normally distributed. 3) Find the 95% confidence interval for the variance and standard deviation of the ounces of Mike’s hard cider that a machine dispenses in 12 ounce cups. Assume the variable is normally distributed. The raw data are: 12.3, 12.1, 12.2, 11.8, 12.0, 12.5, 11.7, and 11.9. Stat Assignment 6B 1) The average production of peanuts in W. Virginia is 3000 pounds per acre. A new plant food is test on 60 acres and the mean yield is 3120 pounds per acre for these plots with a standard deviation of 578 pounds. At Alpha = 0.05, can one conclude that the average production has increased with the new food? 2) A researcher claims that the yearly consumption of soft drinks is 52 gallons per person. In a sample of 50 randomly selected folks who drink soft drinks, the mean was 56.3 gallons and the standard deviation was 3.5 gallons. At Alpha = .01, is the researcher’s claim valid?