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Let x be N(µ,σ2 ) and consider the transformation x=log(y) or equivalently y=exp(x). Find the mean and the variance of y by first determining E(exp(x)) and E[(exp(x)^2 ], by using the moment generating function of x.
Determine the shape of chi-square distribution?
The manager fo the Petroco Service Station wants to forecast the demand for unleaded gasoline next month so that the proper number of gallons can be ordered from the distributor. Compute the two forecast by using MAPD and indicate which seems to be..
For a given confidence interval, what is the interpretation of a 96% confidence level?
Calculate η 2 , the percentage of variance accounted for by treatment.
A firm plans to hire 100 employees during the year. It expects that 25 of these employees will obtain graduate degrees within the next 5 years of being hired.
Two groups of students are asked to rank their preference for six types of soft drinks. The following table shows their rankings.
Monte Carlo sampling makes the assumption that all parameters of an alternative are: A. Independent B. Dependent C. Equal to 1.0 D. Probability distribution
A woman has n keys, of which one will open her door. (a) if she tries the keys at random, discarding those that do not work, what is the probability that she will open the door one her kth try?
Find a 99% confidence interval for the population mean number of weekly miles.
The mean of a set of 7 numbers is 13. What is the sum of the numbers? Find the mode of the following test scores: 89, 78, 91, 82, 75, 89, 84, 95, 89, 93
Compare a tabular cum sum chart using standardized values h = 5 and k = 1/2. What is the information you learn.
Determine the probability of having more than 3 defects in a roll?
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