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There are five sales associates at Mid-Motors Ford. The five representatives and the number of cars they sold last week are:
a) How many different samples of size 2 are possible?
b) List all possible samples of size 2, and compute the mean of each sample.
c) Compare the mean of the sampling distribution of sample means with that of the population.
If they must form an ethics subcommittee of 4 members, how many different subcommittees are possible?
Is there evidence that the population mean amount is different from 8.17 ounces? (Use a 0.05 level of significance and determine the p-value and interpret its meaning.
Consider the experiment of throwing an ideal die three times(all outcomes are equally likely). Let X and M denote the mean and the median respectively, of the three scores obtained.
If we want to estimate the populations mean travel-to-work time San Francisco residents with a margin of error of 1 minute, what sample size should be used? Assume 95 percent confidence.
The objective is to maximize the expected net return. Define the optimal value function and give the optimality equation. Find the optimal policy.
Use either Linear Programming module or Transportation module of Cd to minimize the shipping costs involved in move.
What are the primary differences between investments in corporate stock versus corporate bonds? Since bonds pay interest, does that imply the individuals risk exposure is less for investing in bonds rather than stock?
A member of Congress wants to determine her popularity in a certain part of the state. She indicates that the proportion of voters who will vote for her must be estimated within plus or minus 2 percent of the population proportion.
A safety engineer claims that only 40% of all workers wear safety helmets when they eat lunch at the workplace. Assuming that his claim is right, find the probability that at most 4 out of 6 workers randomly chosen will be wearing their helmets wh..
Using data provided, test if there is a difference between means at alpha =.05.
Test whether the mean rate is less than 6%. Use P-value approach.
A researcher is interested in estimating the noise levels in decibels at area urban hospitals. She wants to be 99% confident that her estimate is correct.
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