2. The article "Effect of Internal Gas Pressure on the Compression Strength of Beverage Cans and Plastic Bottles" (Journal of Testing and Evaluation, 1993: 129–131)includes the accompanying data on compression strength(lb) for a sample of 12-oz aluminum cans filled with strawberry drink and another sample filled with cola. Beverage Strawberry Drink Cola Sample Size 15 Sample Mean Sample SD 21 540 15 554 15 a. Assuming normally distributed populations, calculate a 95% Cl for the ratio of the variances. b. Use your answer in part (a) to determine whether it can be assumed that the population variances are equal. Construct a 90% CI for the true average difference in the compression strengths. c. For the sample of 45 individuals who had taken olanzapine, the article reported (7.38, 9.69) as a 95% CI for true average weight gain (kg). What is a 99% CI?
2. The article "Effect of Internal Gas Pressure on the Compression Strength of Beverage Cans and Plastic Bottles" (Journal of Testing and Evaluation, 1993: 129–131)includes the accompanying data on compression strength(lb) for a sample of 12-oz aluminum cans filled with strawberry drink and another sample filled with cola. Beverage Strawberry Drink Cola Sample Size 15 Sample Mean Sample SD 21 540 15 554 15 a. Assuming normally distributed populations, calculate a 95% Cl for the ratio of the variances. b. Use your answer in part (a) to determine whether it can be assumed that the population variances are equal. Construct a 90% CI for the true average difference in the compression strengths. c. For the sample of 45 individuals who had taken olanzapine, the article reported (7.38, 9.69) as a 95% CI for true average weight gain (kg). What is a 99% CI?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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