A box has 7 blue marbles and 9 yellow marbles.  Pick 2 marbles randomly from the box. Let X be the number of blue marbles in 2 marbles picked.  Calculate the expectation of X.

Q: Current Year Previous Year Occupied Rooms 1,505 1,411 Total Rooms 1,750 1,700

A: Solution:- from given information x1= 1505     ,n1=1750 x2= 1411     ,n2=1700 null hypothesis…

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A: Given that  P(Manila)=0.7 , P(Cebu)=0.4 P(Manila Or Cebu)=0.8

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Q: mean [ Choose ] variance [ Choose ]

A: here given, coin shows a tail in four out of every five tosses

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A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

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Q: Pr(A) = 0.2 %3D Pr(B) = 0.4 %3D Pr(A|B) = 0.5 Hence, find Pr(A n B) Select one: О 0.1 O 0.2 O 0.3 O…

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Q: Five coins are tossed. What is the probability of getting all heads or all tails?

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Q: a. an even number or a 3? b. an odd number or a 4? C. an even number or a 1?

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Q: If X*N(0,1) then X2- G(1,2) الخيار 3 G(1/2 ,2) O 2 uI G(2,2)

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A: The joint probability mass function of X and Y is  f(x,y)=(x+y)/21   , x=1,2,3 and y=1,2

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