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Let X denote the time required to do a computation using an algorithm written in Fortran and let Y denote the time required to do the same calculation using an algorithm written in Pascal. Assume that X is normally distributed with mean 10 seconds and standard deviation 3 seconds that Y is normally distributed with mean 9 seconds and standard deviation 4 seconds.
(a) What is the distribution of the random variable X - Y?
(b) Find the probability that a given calculation will run faster using Fortran than when using Pascal.
baby talk magazine reported that the mean time a mother spends changing diapers a day is 15.1 minutes. a sample of 12
The weight X of grass seed in bags marked 50 lb varies according to a normal distribution with mean 50 lb and standard deviation 1 ounce (0.0625 lb).
the us senate committee consists of 8 members. 5 members are democrates and 3 are republicans. a subcommittee of size 4
At the 1% significance level, can you conclude that there is interaction between factor A and factor B?
a. Was this an observational study or an experiment? b. There are two variables of interest. What was the explanatory variable?
The heights of adults in one town have a mean of 66.3 inches and a standard deviation of 3.3 inches. What can you conclude from Chebychev's theorem about the percentage of adults in the town whose heights are between 59.7 and 72.9 inches..
There are 3 bolts and nuts in a box . a object is drawn at random from the box without replacement. What is the probability that after 2 drawings
A manufacturer of printed circuit boards uses exponential smoothing with trend to forecast monthly demand of its product. At the end of December, the company wishes to forecast sales for January.
The company if we want to be 95% confident that the sample percentage is within 3% of the actual percentage of the accidents covered by the company?
What is the probability that the sample mean will be more than 2808 units away from the population mean?
question the average wind speed in casper has been found to be 12.7 mph and in tucson it has been found to be 6.2 mph.
What is the truth value of the following statements? All assassinations are morally justifiable actions.
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