Your company sells 3 lb. bags of chocolate chips to retailers in Oakland. Recently there have been complaints from one chain of stores that customers have been returning opened bags that weigh significantly less than the label indicated. You want to test the null hypothesis that the weight of the bags are indeed 3 Ibs. against the one-sided alternative that they are instead less than 3 Ibs. You randomly sample 225 bags from your factory. The average weight of the bags that you sample is 2.92 lbs. with a standard deviation of 0.80 lbs. What is the t-statistic for this test? (Note: Write answer out to the hundredths place.) Can you reject the null hypothesis in favor of the alternative at a 5% significance level? (Yes or No) Can you reject the null hypothesis in favor of the alternative at a 10% significance level? (Yes or No) What is the p-value for this test? (Note: Write answer in percentage terms to the hundredths place.) Construct a 95% confidence interval for the true weight of the bags that you are shipping out? (Note: Write the lower and upper bound of the confidence interval below, each to the hundredths place.) Lower Bound: Upper Bound:
Your company sells 3 lb. bags of chocolate chips to retailers in Oakland. Recently there have been complaints from one chain of stores that customers have been returning opened bags that weigh significantly less than the label indicated. You want to test the null hypothesis that the weight of the bags are indeed 3 Ibs. against the one-sided alternative that they are instead less than 3 Ibs. You randomly sample 225 bags from your factory. The average weight of the bags that you sample is 2.92 lbs. with a standard deviation of 0.80 lbs. What is the t-statistic for this test? (Note: Write answer out to the hundredths place.) Can you reject the null hypothesis in favor of the alternative at a 5% significance level? (Yes or No) Can you reject the null hypothesis in favor of the alternative at a 10% significance level? (Yes or No) What is the p-value for this test? (Note: Write answer in percentage terms to the hundredths place.) Construct a 95% confidence interval for the true weight of the bags that you are shipping out? (Note: Write the lower and upper bound of the confidence interval below, each to the hundredths place.) Lower Bound: Upper Bound:
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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