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Question: The useful life of a particular make and type of automotive tire is normally distributed with mean 57,500 miles and standard deviation 950 miles.
a. Find the probability that such a tire will have a useful life of between 57,000 and 58,000 miles.
b. Hamlet buys four such tires. Assuming that their lifetimes are independent, find the probability that all four will last between 57,000 and 58,000 miles. (If so, the best tire will have no more than 1,000 miles left on it when the first tire fails.)
Your supervisor has asked you to prepare a brief report comparing the sales volumes and the consistency of sales of these four salespersons. Use the mean sales for each salesperson to compare the sales volumes.
Under ordinary traffic conditions. What is the probability that a single car chosen at random will travel through the tunnel in 10 minutes?
a.) The relationship between gender and pet ownership is significant. b.) The relationship between gender and pet ownership is not significant.
WHich sampling method from the choices listed above would be best? Describe how you would carry out your chosen sampling method of a student from part (a)
Jack in the Box offers hamburgers, turkey burgers, and chicken. They also offer two kinds of drinks Pepsi and ice tea and two flavors of ice cream vanilla and strawberry. What is the probability of a customer ordering chicken, an ice tea and strawb..
a. Give Shop-Mart a recommendation. In doing so, use "0.012" in a sentence that would be understood by a Shop-Mart executive who has had no statistical training but is comfortable with probabilities as used by weather forecasters. b. In interpret..
a college requires an iq of 120 or more for entrance. from what percentage of the population must it draw its students?
State three ways that nonparametric tests differ from parametric tests. A chi-square test is used when we measure data on what scale of measurement?
Question: The cash flow of the project is as follows. Decide if the project is acceptable when the discount rate is 10% Year Cashflow($) 0 -1000000 1 200000 2 200000 3 300000 4 300000 5 350000
For a given test on whether the man has a heart attack, the probability of committing a Type II error is: P (The hospital does not admit him as a heart attack patient| The man has a heart attack).
Answer all of these questions using R Commander. Include all graphs, outputs from R Commander.
Refer to given Case Study, "Quitting Smoking with Nicotine Patches," which used a completely randomized design. Explain how the experiment could have been done by using a randomized block design instead.
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