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40 observerations with a population standard deviation of 5 and a sample mean is 102. another 50 observation with a standard deviation of 6 and a sample mean of 6. conduct a hypothesis using the .05 significance level.
An advantage of the permutation test over the t test for a difference in means, can Permutation tests be used for tests when we believe the two populations differ under the null hypothesis.
It is known that 6.3 percent of students who applied to UTC were not accepted. Determine the highest score of those who were denied acceptance?
Determine the probability that of a Type I error using decision rule if population mean is in fact 800 kilowatts per day?
If the standard deviation of the process is unknown, another approach is to use the sample range as a measure of process variability. Calculate the control limits for the above process using the sample range.
Motorola takes two weeks to supply an order. if the store manager is targeting a fill rate of 99%, what safety inventory should the store carry? What should its ROP be?
Suppose the joint probability density function of X and Y is uniform in the plane square with corners (0,0), (0,3), (3,0) and (3,3). Find the probability of X > 1 or Y > 1. Find the probability of X + Y
Describe the difference between sample and a sampling distribution. Your reply must be in complete sentences and you may use sketches to help you.
A noted psychic was tested for ESP. The psychic was presented with 400 cards face down and asked to determine if each card was marked with one of four symbols: a star, cross, circle, or square. The psychic was correct in 120 cases. Let p represent..
Is the mean list price of a house lower if there are 3 bedrooms compared to 4 bedrooms? To answer this question we will construct a confidence interval and hypothesis test.
A large discount chain compares the performance of its credit managers in Ohio and Illinois by comparing the mean dollar amounts owed by customers with delinquent charge accounts in these two states.
Test scores on a university admissions test are normally distributed, with a mean of 500 and a standard deviation of 100. a) What is the probability that a randomly selected applicant scores between 425 and 575?
The time, in hours, that a copying machine may work without breaking down is the normally distributed random variable with mean 549 and the standard deviation 68.
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