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Over the past decade, there has been a strong positive correlation between teacher salaries and prescription drug cost. (a) Do you think paying teachers more causes prescription drugs to cost more? Explain. (b) What lurking variable might be causing the increase in one or both of the variables? Explain.
The gross profit of a business is the difference between what a retailer charges for what it sells (net sales) and the cost of the items sold. For ex- ample, in the first quarter of 2010
Determine the percentage of defective washers produced by this machine, assuming the diameters are normally distributed.
A researcher randomly assigns 12 participants to one of three weight-loss conditions (A-diet, B-exercise, C-medication). The researcher obtains the following data: What is the values of SStotal
Consider a random sample of size n from a normal distribution, Xi ~ N(m,9). a) Find the CRLB for the variances of unbiased estimators of m. b) Is the MLE, m(hat) = X(bar), a UMVUE of m?
What is the expected total activity time in weeks for each of the five separate paths through the network? What is the critical path for the network and associated overall project completion time in weeks?
Explain what property associated with the Central Limit Theorem you consider the most important contribution, enabling the use of the normal distribution for sample means.
Find the critical value for different types of sample size and level of significance:
An urn contains w white chips, b black chips, and r red chips. The chips are drawn out at random, one at a time, with replacement. What is the probability that a white appears before a red?
the rent-n-drive car rental company know from experience that the number of miles per day that customers drive a rental
A random sample of 20 single men was asked if they would welcome a woman taking the initiative in asking for a date. What is the probability that
Also, what information do you need to get from the problem to put into Minitab to run a binomial calculation?
I have a problem that wants to know the sample size of Illinois republican voters, they want to know the sample size with 95% confidence and 3% margin of error, not sure how to get started.
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