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A gasoline tank for a certain car is designed to hold 15 gallons of gas. Suppose that the variable x = actual capacity of a randomly selected tank has a distribution that is well approximated by a normal curve with mean 15.0 gallons and standard deviation 0.1 gallon.
a. What is the probability that a randomly selected tank will hold at most 14.8 gallons?
b. What is the probability that a randomly selected tank will hold between 14.7 and 15.1 gallons?
c. If two such tanks are independently selected, what is the probability that both hold at most 15 gallons?
Develop a point estimate of the number of minutes per day officeworkers waste trying to locate mislabeled, misfiled, or misplaced items.
let Xn be number of people selected until first person with non-blue eyes shows up, and let X be number of people select until first person with different eye color to preceding people shows up. Find out E(Xb), E(Xn) and E(X).
the population of douglas fir trees was shown to have an approximately normal diameter distribution with mu 50
Use differential calculus to find both sales volume at which revenue is maximised and the maximum revenue available from sales of product X.
In a one-tail test involving a sample mean, the p-Value is found to be equal to 0.10. If the test had been two-tail instead of one-tail, the p-Value would have been
the probability that a student passes math class is 60 and the probablility the student passes english is 80. the
weights of pacific yellowfin tuna follow a normal distribution with mean weight of 68lb and standard deviation 12 lb.a.
Suppose the waiting time at a restaurant is normally distributed with a mean of 12 minutes and a standard deviation of 6 minutes.
You wish to compare how a low-fat diet, low-fat diet and a brisk four-mile walk each day, and a low-fat diet and a four-mile job each day affect cholesterol levels. You randomly assign six subjects to each group. The scores in the table below show th..
A data source generates hexadecimal characters. Let X be the integer value corresponding to a hex character. Suppose that the four binary digits in the character are independent and each is equally likely to be 0 or 1.
What is the probability that a sample mean will be within plus-or-minus two of the population mean for each of the following sample sizes?
The store manager is under impression that his sales people do more business if they score higher on the social skills test which was administered this year. 5 victims were selected at random. Below, the results are X =test score, Y =weekly sales ..
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