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A discrete random variable X can only takes the values 0,1, 2 and 3 with probability function given by: f(x)= k/2+x , x=0,1,2,3
a) The value of k
b) P(X=2 or X=3)
c) F(X)
d) The mean and variance of X
e ) E(-3X+2) and V(-3X+2)
Q2-A panel of prospective jurors includes six married men, three single men, seven married women, and four single women. If the selection is random, what is the probability that a jury will consist of four married men, one single man, five married wo men and two single women?
consider the following. give your answers correct to two decimal places.a find the standard score z such that the area
for each research situation described below decide what statistical procedure would most likely be used to answer the
Each of the 10 programs had 50 subjects in it. The subjects were followed for 12 months. Weight change for each subject was recorded.
Evaluate the probability that the measurement lies between 110.150m and 110.170m.
One thing you have learned is that the tangency portfolio will give you the maximum Sharpe ratio. Consequently, you have constructed such a portfolio. What are you portfolio weights.
A random sample of 16 federal inmates is selected. What is the probability that exactly 12 are serving time for drug dealing?
(A) Which test is the most appropriate to analyze these data, and why is that test most appropriate? (B) What are an appropriate null and alternative hypothesis for this statistical test?
Deduce that the random variable Y in (a) has the density given in (b).
You are asked to match three songs with the performers who made those songs famous. if you guess, the probability distribution for the number of correct matches is:
Provide a discussion that supports the assumption that the variance of savings increases with family income.
Is Exploratory Data Analysis considered a descriptive data analysis method?
If 14 Americans are selected at random, find the probability that exactly 9 own an answering machine.
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