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The Widget Ruler Company produces 12" rulers. A sample of 46 rulers has a mean of 12.2" with a standard deviation of 5". The owner decides to do a hypothesis test with a 90% significance level to see if the length of the rulers is greater than 12". A. What is the null hypothesis? B. What is the alternative hypothesis? C. Find the p-value. D. Use the p-value and alpha values to determine if you reject the null hypothesis.
Sagot :
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