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The following probability distribution represents the number of people living in a Household (X), and the probability of occurrence (P(X)). Compute the Expected Value (mean), the Variance and the Standard Deviation for this random variable.
1 a contractor has produced the first unit of a laser targeting device at a cost of 45k. historically their learning
The average cost of a gallon of regular unleaded fuel at gas stations nationwide was $3.23, with a standard deviation of $0.23. Assume the national average holds for Connecticut. What is the probability that a sample of 30 gas stations in Conne..
At the .10 significance level you will test to determine if there has been an increase in selling time. Is this a 1 or 2 tail test?
Using random numbers of 0.1562, 0.9821, 0.3409, 0.5594, and 0.7758, compute the time required for each of five simulated maintenance checks of the airplaine's landing gear.
1.a manufacturer receives parts from two suppliers. an srs of 400 parts from supplier 1 finds 20 defective. an srs of
The probability of contracting the kissing disease is .23 when one is exposed to a certain provocative environment. Sixty people are so exposed. What is the probability that no more than 10 are infected with this dreaded disease.
Suppose that 1 out of 500 infant's are born with Down's Syndrome.
X2 is college board score (range 200-800). Use the multiple regression equation to predict college gpa for a high school gpa of 3.6 and a college board score of 600.
Perform 5 t-tests on the data comparing C1 to C2 on each of the 5 questions. Indicate which of the 5 variables has a difference between C1 and C2.
In your own words, describe the concept of correlation, include the coefficient of correlation (r) and the coefficient of determination (r2) in your description.
bentley foods inc. a large manufacturer of frozen foods has developed a new line of frozen pizza. management has agreed
A post office has a single line for customers waiting for the next available postal clerk. There are two postal clerks who work at the same rate.
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