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A deck of cards consists of ?fty two cards. There are four suits Clubs, Diamonds, Hearts, Spades, each containing thirteen cards. Among these thirteen cards, there are nine of them numbered from 2 to 10 and the other four are special cards, namely Ace, King, Queen and Jack. In how many ways can we draw six cards such that
(a) All six cards are hearts.
(b) There are three aces, two kings and one queen.
(c) There are three cards of one suit, and three of another suit.
the shelf life of a battery produced by one major company is known to be normally distributed with a mean life of 3.5
the random variable x represents the number of cars per household in a town of 1000 households. find the probability of
A stick of length 1 is broken at a uniformly random point, yielding two pieces. Let X and Y be the lengths of the shorter and longer pieces, respectively.
a. What is the probability that the bookstore sells no book during a particular hour? b. What is the PDF of the time until the first book is sold?
We see the south take on a form of slavery referred to as chattel. Why did southerners feel they had to be harsh and cruel to their slaves?
That way you will have evidence to present to the director if you implement the cut in hours. Test the claim that there is no difference at the .01 significance level. Can you implement your staffing changes?
Your answer to part (b) indicates that a clear majority in the sample were able to match correctly for the purebred dogs.
Profit from a risky investment. Rotter Partners is planning a major investment. The amount of profit X is uncertain, but a probabilistic estimate gives.
The central bank of Vietnam (SBV) would like to maintain the previous rate. What actions they will do?
Testing the test Are false positives too common in some medical tests? Researchers conducted an experiment involving 250 patients with a medical condition.
The report of a sample survey of 1014 adults says, "with 95% confidence, between 9% and 15% of all Americans expect to spend more on gifts this year than last
Assume that one of the subjects is randomly selected. What is the probability that the selected person refused to respond or is over 59 years of age?
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