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A group of three students is to be randomly selected froma group of 1 freshman, 1 sophomore, 3 juniors and 3 seniors. Let Y1 and Y2 denote the number of juniors and seniors,
a) What is the joint probability distribution for Y1 and Y2?
b) Find the marginal distributions of Y1 andY2.
c) Are Y1 and Y2 independent? Why or why not?
At 5% level of significance, is there evidence of difference in mean life of bulbs made by the 2 kinds of machines. What is your conclusion?
A TV spot in the Channel 22 early news costs $1500. The average quarter hour Adult 25-54 audience is 15,000. What is the CPM?
Determine odds student gets more than 14 questions correct? Determine the odds student gets exactly 12 questions correct?
The accompanying table summarizes randomly selected sample data for San Francisco Defendants in burglary cases.
It does not matter, when data are skewed mean and median are the same.
The 95% prediction interval for a new patient with a 2-day cholesterol level of 220 is
Suppose you want to test the hypothesis that students who study one week before score different from students who study the night before. A 2 sample t-test test is run based on your data and a p-value is calculated to be 0.0219. What is the approp..
Illustrate is the range of values for a coefficient of correlation. Illustrate degree of relationship do values of the correlation coefficient (r)with magnitudes close to 1.00 indicate.
Describe the optimal solution to a linear programming problem. comprise the following constraints from a two -variable linear program.
Solve different inventory control problems using an appropriate OR method.
Find the mean ______________ and the standard deviation _____________
Determine the mean and standard error of the x - bar distribution.
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