The manager of the quality department for a tire manufacturing company wants to know the average...
The manager of the quality department for a tire manufacturing company wants to know the average tensile strength of rubber used in making a certain brand of radial tire. The population is normally distributed, and the population standard deviation is known. She uses a z test to test the null hypothesis that the mean tensile strength is 800 pounds per square inch. The calculated z test statistic is a positive value that leads to a p-value of .045 for the test. If the significance level (α) is .05, the null hypothesis would be rejected.
True
False
Homework Answers
Answer : True
Explanation :
Because , p-value < significance level
i.,e 0.045 < 0.05
So the null hypothesis rejected.
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