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A deck of 52 cards is shuffled and a bridge hand of 13 cards is dealt out. Let X and Y denote, respectively, the number of aces and the number of spades in the hand.
(a) Show that X and Y are uncorrelated.
(b) Are they independent?
How do I find the expected values of E[XY], E[X], and E[Y]? (explain each step)
1. you manage a loan portfolio at a local bank. one day you are approached by a jim riskind who is seeking an unsecured
Both SAT and ACT scores are normally distributed. What is the probability that a randomly selected high school senior's score on the mathematics part of the SAT will be more than 630?
a sample of 60 women is obtained and their heights in inches and pulse rates in beats per minute are measured. the
Find the probability that a randomly selected teacher earns and what sample size is necessary to double the standard error of the mean and what sample size is needed to cut the standard error of the mean in half?
You are conducting a study on what socio-demographic factors could be behind the behavioral problems of students. You are looking at how many times a student was sent to detention. You have information on race, gender, household median income, single..
Explain how the power of hypothesis test is influenced by each of the following. Assume that all other factors are held constant. Increasing the alpha level from .01 to .05.
an instant lottery scratch off game offers a 0.04 probability of winning on any one play. plays are independent of
an economy consists of the three sectors agriculture energy and manufacturing. for each 1 worth of output the
Discuss at least three reasons why these predictions may not be accurate and offer three ways in which you can increase the likelihood of accurately predicting your customers' purchases.
Would that daily sales figure be considered a potential outlier? why or why not? e) Find the probability that sales on a randomly selected day are at most $3445.
a light bulb is advertised as lasting an average of 1000 hours with a standard deviation of 150 hours. find the
q1. which of the following is an example of quantitative data? the players number on a baseball uniform the serial
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