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Cars coming along Magnolia Street come to a fork in the road and have to choose either Willow Street or Main Street to continue. Assume that the number of cars that arrive at the fork in unit time has a Poisson distribution with parameter λ = 4. A car arriving at the fork chooses Main Street with probability 3/4 and Willow Street with probability 1/4. Let X be the random variable which counts the number of cars that, in a given unit of time, pass by Joe's Barber Shop on Main Street. What is the distribution of X?
A customer with a trade-in offers the store a $260 cash price for the cabinet. Is that a better deal (for the customer) than the store is offering? On Mary's 16th birthday, her parents invest on her behalf an amount of $5,000 into an account that ..
Develop three regression models to predict the selling price based upon each of the other factors individually. Which of these is best?
Late payment of medical claims can add to the cost of health care. State the null hypothesis, State the alternative hypothesis. Perform the hypothesis test and state your conclusions and evidence
a panel of meteorological and civil engineers studying emergency evacuation plans for floridas gulf coast in the event
More critical values. You have an SRS of size 30 and calculate the one-sample t statistic. What is the critical value t* such that t has probability 0.025 to the right of t*?
Referring to the table above, the researcher was attempting to show statistically that the female MBA graduates have a significant lower mean starting salary than the male MBA graduates
Describe a study you might design that could use the Chi Square statistic. What are the variables? What are the null and alternative hypotheses? Why would the Chi Square test be appropriate for this design?
Find the p-value of the test of the hypothesis that mileage is not affected by the additive when the sign test is used;
an accountant for a large department store would like to develop a model to predict the amount of time it takes to
Population and the sample proportion of grandparents as primary caregivers (-hat) is to be calculated. What is the mean of the sampling distribution of -hat?
Consider the data for a three-group MANOVA with two dependent variables. Run the MANOVA on SPSS. Is it significant at the .05 level? Examine the univariate F's at the .05 level. Are any of them significant? Explain this situation.
in a test for effectiveness of garlic for lowering cholesterol 47 subjects were treated with garlicin. cholesterol
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