The following double line graph represents the enrollment of students at Jefferson Middle School for 2006 through 2009. What was
the difference between seventh and eighth grade enrollment in 2008?
1 answer:
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The expected number of cards from the card deck that will be strictly between the two jokers is .
The most popular deck of cards used today is a normal 52-card deck of French-suited playing cards. [a] It is the only standard pack[b] used for playing cards in English-speaking nations; but, in many other nations throughout the world, it is used alongside other traditional, frequently older, standard packs with various suit systems, like those with German-, Italian-, Spanish-, or Swiss suits. The English pattern pack is the only one widely accessible in Britain and America and the most popular pattern of French-suited cards globally. The Belgian-Genoese pattern, which was created in France but is also used widely in Spain, Italy, the Ottoman Empire, the Balkans, and much of North Africa and the Middle East, is the second most popular.
Let all pairs of the positions (m,n) of the jokers are equally likely
the expected value will be
Therefore, the expected number of cards that will be strictly between the two jokers is .
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