The quality control department has collected data on defective products produced over a 24-hour time span. Using a random sample of 800 products, they discover that the average number of defects is 254, while the sample standard deviation is 30. The department wants to conduct a test of whether the average number of defective product is 250 or not. Which of the following statements is true? I. The null hypothesis can be rejected with 68% confidence. II. The null hypothesis can be rejected with 95% confidence. III. The null hypothesis can be rejected with 99.7% confidence. A) I only B) II only C) III only D) All three statements
The quality control department has collected data on defective products produced over a 24-hour time span. Using a random sample of 800 products, they discover that the average number of defects is 254, while the sample standard deviation is 30. The department wants to conduct a test of whether the average number of defective product is 250 or not. Which of the following statements is true? I. The null hypothesis can be rejected with 68% confidence. II. The null hypothesis can be rejected with 95% confidence. III. The null hypothesis can be rejected with 99.7% confidence. A) I only B) II only C) III only D) All three statements
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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The quality control department has collected data on defective products
produced over a 24-hour time span. Using a random sample of 800 products, they
discover that the average number of defects is 254, while the sample standard deviation
is 30. The department wants to conduct a test of whether the average number of
defective product is 250 or not.
Which of the following statements is true?
I. The null hypothesis can be rejected with 68% confidence.
II. The null hypothesis can be rejected with 95% confidence.
III. The null hypothesis can be rejected with 99.7% confidence.
A) I only
B) II only
C) III only
D) All three statements
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