[統計] 嘉大行銷所考古題
In a lottery game, a player selects 6 inteners out of the first 49 positive
integers. The sposor then ramdomly selects 6 out of the first 49 positive
integers. Cash prizes are given to a player who match4, 5 or 6 inteners.
Lex X equal the number of inteners selected by a player that match inteners
selectd by the sponder.
(1) State the p.d.f X
(2) Calculate the mean,variance and standard deviation X.
(3) What value of X is mostly likely to occur?
(4) On March,2005, the jackpot was worth $450,000,000. When the prize is large,
a lot of bets are placed. Out of 25,000,000 bets that were placed,3 people
matched 6 numbers and matched 5 numbers,22187 matched 4 numbers.
Are these numbers of winners consistent with the probability model?
請問這題是二項分配嗎?
f(x)=(6Cx)P^XQ^(n-x)嗎 p=6/49 x=0.1.2.3.4.5.6
第四小題則無頭緒
謝謝~~~~
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