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Let X= annual medical cost for a dog and Y= annual medical cost for a cat. Suppose that X and Y are both normally distributed with the means and standard deviations given above. Letting K = Y - X, find P(K>0). In other words, you are finding the probability that a randomly selected cat will cost more than a randomly selected dog in terms of their annual medical costs. (Hint: K also has a normal distribution with a certain mean and standard deviation.)
Four brands of lightbulbs are being considered for use in the final assembly area of the Saturn plant in Spring Hill, Tennessee. The director of purchasing asked for samples of 100 from each manufacturer.
A normal distribution has a mean of µ = 100 with σ = 20. If one score is randomly selected from this distribution, what is the probability that the score will have a value between X = 90 and X = 120?
A pie chart shows the market shares of cola products. The "slice" for Pepsi-Cola has a central angle of 90 degrees. What is its market share?
Construct a 95 percent confidence interval for the population mean. Is it reasonable that the population mean is 28 weeks? Justify your answer.
Describe ways in which the use of MS Excel as a tool for interpreting data can be used by a manager of an organization.
If HIV virus is actually present, the probability that ELIA test will give a positive result from ELISA is .01. If ELISA has given a positive result, use the Bayes' theorem to find the probability that the HIV virus is actually present.
A digital camcorder repair service has set a goal not to exceed an average of 5 working days from the time the unit is brought in to the time repairs are completed. A random sample of 12 repair records showed the following repair (in days)
Assume we have set of blood pressure with a mean of 80 Diastolic, and a sample standard deviation of 10 points. If we assume a normal distribution of Diastolic blood pressures,
If the voice identifications were made by random guess, find the probability that all 9 victims would select the same person?
Solve the equations using linear algebra
Solve different inventory control problems using an appropriate OR method.
Tthe amount is approximately normally distributed with a mean of 16 and a standard deviation of 1.5. What percent of the cups will have 15 oz or fewer?
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