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To find the expected value of random variable X.
An experiment consists of flipping the fair coin three times and noting the number of heads and tails. A random variable x is defined to be two times the number of heads plus the number of tails.
Find out E(x), the expected value of x.
(a) 3.5
(b) 4.0
(c) 4.5
(d) 5.0
(e) None of the others
With this information, by constructing a 2 by 2 table, compute the predicative value positive and predictive value negative of the ELA in hypothetical population of 1000000 blood donors.
What is the probability that none can transact business in a foreign language?
A bag contains 5 blue balls and 8 purple balls. If 3 balls are chosen randomly and without replacement, form the bag. Let x be the number of blue balls obtained. Then x has a distribution.
Using Sally's estimate of demand that follows, how many T-shirts should she produce for the upcoming event?
If garage is robbed, determine the probability doors were left open?
Find out optimal decision
Computation of Expectation, Variance and Covariance.Calculate the variances of Y1 and Y2.
Given 7 male individuals in a Physical Education course, the number of sit ups each individual can do in a one minute period was recorded:
What is the approximate permutation test P-value and What is the permutation test P-value for testing the equality of the means versus the hypothesis that the mean change for the treatment group is larger than the mean treatment for the control gro..
The mean return for a random sample of 33 mutual funds is 14.93 percent with a standard deviation of 9.57. Build a 95 percent confidence interval for mu, population mean.
Simulate both one-and two-teller systems, calculate waiting time, average queue length, and percentage utilization for each system.
The management of a regional bus line thought its cost of gas might be correlated with its passenger/mile ratio. Comment on the data and correlation matrix below.
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