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Suppose that the random variable X is equal to the number of hits obtained by a certain baseball player in this next 3 at bats.
If P(X =1) = 0.3, P(X = 2) = 0.2, and P(X = 0) = 3P(X = 3).
Find:
1. the pmf of X.
2. the expectation of X.
3. the variance of X.
4. the standard devaition of X.
Let S = {c, h, j, q, t, y} be a sample space of an experiment and let E = {c, h}, F = {c, q, y}, and G = {h, j, t} be events of this experiment. (Enter your answers using roster notation. Enter Ø for the empty set.)
statistics application evaluation criteriause this rubric for the following applications factorial anova week 3 anova
Using = .05, what is the critical value for the test statistic? (+ or -). State the rejection rule: Reject H0 if z is the lower critical value or the upper critical value.
Where should the warranty limits be set so that only 10% of the TVs need repairs at the manufacturer's expense?
What are the inequalites that define the region in the first quadrant. How about 2nd, 3rd and 4th quadrants?
test for single mean.according to one investigators model the data are like 400 draws made at random from a large box.
1.on november 26 1995 the minneapolis tribune ran an article on gender differences in shopping behavior. when 400 women
Assume that 89 percent of all batteries have acceptable voltages. Let Y be the number of batteries that must be tested until finding two acceptable ones. What is the probability that Y=6?
What is the 90% confidence interval estimate of the difference between the two population means? How do the results compare in all the three approaches to hypothesis testing?
At 95% level of confidence, can we conclude that the babies using the Gibbs product gained less weight?
A standard deviation of .15 million people. What is the proportion of these newscasts having between .9 million and 1.5 million viewers?
What is the probability that a randomly selected student will have a score of 80 or higher? If there were 97,680 students with scores higher than 91, how many students took the test?
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