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A manufacturing process is designed to produce bolts with a 0.5-inch diameter. Once each day, a random sample of 36 bolts is selected and the bolt diameters are recorded. If the resulting sample mean is less than 0.49 inches or greater than 0.51 inches, the process is shut down for adjustment. The standard deviation for diameter is 0.02 inches. What is the probability that the manufacturing line will be shut down unnecessarily? (Hint: Find the probability of observing an x in the shutdown range when the true process mean really is 0.5 inches.)
suppose you wish to estimate the difference between the mean acidity for rainfalls at two different locations one in a
Find the test statistic . Find the standardize test statistic. decide whether the standardize test statist is in the rejection region and decide whether you should reject or fail to reject the null. Sample are random and independent. Claim u1 =u2,..
the p-value of a hypothesis test is 0.0345.which of the following claims is correct?a reject ho at the 0.05
the college board reported the following mean scores for the three parts of the scholastic aptitude test sat the world
You calculate the difference in income as (after incentive plan - before incentive plan). You want to test whether income after the incentive plan is different from income before the incentive plan. What are the hypotheses for this test?
the percentage of couples where both parties are in the labor force is 52.1. choose 5 couples at random. find the
for each of the following parts indicate whether we would generally expect the performance of a flexible statistical
a certain office building infrequently experiences power outages. it is known that the probability of a power outage on
a manufacturer claims the average life of a product is 500 hours. the lifetime of the product is assumed to follow an
Determine the values of the slack and surplus variables and interpret them. Which constraints are binding constraints? Describe.
The following table represents a summary by state for Medicare enrollment (in thousands) for 15 randomly selected states in 1998 (source: Statistical Abstracts of the United States, 1999).
according to the sleep foundation the average nights sleep is 6.8 hours fortune march 20 2006. assume the standard
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