A) Formulate the hypotheses using the appropriate notation. B) Calculate the test statistic showing 3 places after the decimal. C) Find the p-value from the theoretical distribution area in Stat Key D) Write your conclusion in the language of the problem. 1. A food company claims its frozen dinner lasagna has a mean of 690 calories per serving. The quality control department wants to test to see if the mean is actually more than 690 calories. In a sample of 70 of the entrees the mean number of calories was 698 with a standard deviation of 11 calories. At the 5% significance level is there sufficient evidence to claim the mean calories in an entrée is more than 690? The mean time it took a customer service department to process a customer complaint in 2014 was 11.4 minutes. A new process was incorporated that required less work. Before fully adopting the new process the company wanted to see if there was evidence that the mean time to process the complaints had changed under the new process. In a sample of 51 complaints handled with the new process the mean time was 13.1 minutes with a standard deviation of 4.2 minutes. At the 5% significance level can we claim that the mean time to process a complaint has changed.

A) Formulate the hypotheses using the appropriate notation. B) Calculate the test statistic showing 3 places after the decimal. C) Find the p-value from the theoretical distribution area in Stat Key D) Write your conclusion in the language of the problem. 1. A food company claims its frozen dinner lasagna has a mean of 690 calories per serving. The quality control department wants to test to see if the mean is actually more than 690 calories. In a sample of 70 of the entrees the mean number of calories was 698 with a standard deviation of 11 calories. At the 5% significance level is there sufficient evidence to claim the mean calories in an entrée is more than 690? The mean time it took a customer service department to process a customer complaint in 2014 was 11.4 minutes. A new process was incorporated that required less work. Before fully adopting the new process the company wanted to see if there was evidence that the mean time to process the complaints had changed under the new process. In a sample of 51 complaints handled with the new process the mean time was 13.1 minutes with a standard deviation of 4.2 minutes. At the 5% significance level can we claim that the mean time to process a complaint has changed.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

See similar textbooks