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To find the probability value using the normal distribution. Fast Service Truck Lines uses the Ford Super Duty F-750 exclusively. Management made a study of the maintenance costs and determined the number of miles traveled during the year followed the normal distribution. The mean of the distribution was 60,000 miles and the standard deviation 2,000 miles.
a. What percent of the Ford Super Duty F-750s logged 65,200 miles or more?
b. What percent of the trucks logged more than 57,060 but less than 58,280 miles?
c. What percent of the Fords traveled 62,000 miles or less during the year?
d. Is it reasonable to conclude that any of the trucks were driven more than 70,000 miles? Explain.
The probability that the daily demand at this store is at least one and at most three is:
At α = 0.01 level of significance, test the hypothesis that these data can be described by a Poisson pdf.
Find the value for the correlation coefficient r.
Construct a 90 percent confidence interval for the proportion of all kernels that would not pop.
Find the probability that in a given month:
Claculate the exponential also adjusted exponential smoothing forecast and linear trend forecasting. The hotel has experienced the following occupancy rates for the past 9 years.
The probability of the patient being chosen at random as having meningitis as only site of infection is?
Find a 90% confidence interval for the difference between the proportion of men and the proportion of women who approved of Reagan's performance. What assumption do you make to use this method?
By using this data and incorporating seasonal effects, predict quarterly turnover for 2010.
Researcher asked group of 30 students - 12 of them supported change, 13 of them didn't, and 5 had no opinion. This is not binomial model as?
Conduct a statistical test to determine if the sample is representative of the population.
Find the probability that in a given year,a) Exactly one major hurricane will strike the U.S. mainland
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