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 248, while the sample standard deviation is 35. 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 when the significance level is 0.32. II. The null hypothesis can be rejected when the significance level is 0.05 III. The null hypothesis can be rejected when the significance level is 0.003. 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 248, while the sample standard deviation
is 35. 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 when the significance level is 0.32.
II. The null hypothesis can be rejected when the significance level is 0.05
III. The null hypothesis can be rejected when the significance level is 0.003.
A) I only
B) II only
C) III only
D) All three statements
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