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The proportion of parts in an inventory that are outdated and no longer useful is thought to be 0.10. To check this, a random sample of n = 100 parts is selected and 14 are found to be outdated. Based upon this information, what is the probability of 14 or more outdated parts?
The standard deviations s1 and s2 can be used when Ó1 and Ó2 are unknown and you believe that the underlying distribution is normal. Then, you would use s1 and s2 with the t-test for hypothesis testing.
If alternate hypothesis mention that m doesn't equal 4,000, determine the rejection region for the hypothesis test?
Testing for two Proportions - Is the difference between the averages statistically significant?
Black Hole Pizza Parlor instructs its cooks to put a "handful" of cheese on each large pizza. A random sample of six such handfuls were weighed.
Create a hypothesis and perform a series of tests to determine if there is any fundamental difference in the findings.
Use the traditional method to test the given hypothesis. Assume that the population is the normally distributed and that the sample has been randomly selected.
lowering the price does not decrease this behavior and we should not decide to lower prices based on this research." Comment on the executive's conclusion. What type of inference is being made? Will the decision not to lower prices be a good one.
When combining probabilities, to find the probability of one event AND another event, the separate probabilities should be
Calculate and interpret standard error of estimate se and coefficient of determination R2 for these data.
If the mean times for both George and Julia are actually the same, what is the probability that George will be let go?
Is there a relationship between sales and newspaper?
If a single test is run and indicates that oil is present, what is the revised probability that oil is actually present?
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