Nancy believes that the average running time of movies is equal to 140 minutes.A sample of 4 movies was taken and the following running times were obtained.Assume the population of the running times is normally distributed.
a.Compute the sample mean and the standard deviation.
b.State the null and alternative hypotheses.
c.Using the critical value approach,test the hypotheses at the 10% level of significance.
d.Using the p-value approach,test the hypotheses at the 10% level of significance.
Definitions:
Finishing Department
The final phase in the manufacturing process where products are completed, inspected, and prepared for sale.
Product A
A specific item or service offered by a company, designated as "Product A" for identification or classification purposes.
Multiple Production Department Factory Overhead Rate
Different rates used for allocating factory overhead costs to products based on the department in which those costs are incurred.
Product A
Not a real key term.
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