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1) Given that p(a and b)= .4 and p(a/b)= .8, find p(b)
2) When two cards are drawn from an ordinary deck of 52 playing cards, what are the probabilities of getting (a) 2 aces; (b) 2 spades, of which there are 13 in the deck; (c) a king and a queen?
the frequency distribution of 100 families given below the number of families corresponding to the expenditure groups
suppose the joint pdf of lifetimes of a certain part and a spare is given byfx y e?xy 0 lt x lt ? 0 lt y lt ?and zero
How do you verify that the assumption of a normal distribution is correct if you've only the mean and standard deviation?
Cars pass a certain street location according to a Poisson process with rate λ. A woman who want to cross the street at that location waits until she can see that no cars will come by in the next T time units.
a student survey was done to study the relationship between gender and favorite television program watched on sunday
Formulate the hypotheses to determine whether or not the lathe is in perfect adjustment.
Construct a scatterplot for the (x, y) values below, and answer the following questions. What would be the slope of this regression line?
What would you predict the price per share to be if 95 million shares were offered?
suppose that the mean score on a creativity test is 20 and the standard deviation is 5. you are told that the
If the estimate is to be within 8 mpg of the true mean with 98% confidence and the estimated standard deviation is 22 mph, how large a sample size must be taken?
Call this the customer's age. Next, for each of 100 customers, draw from the N(10; 2) distribution and call this the customer's length of membership.
Compute the variance and standard deviation
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