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StatisticsWhat is expected value for this situation: # of 8's if 50 cards are drawn...

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juno60 | Salutatorian

Posted June 18, 2012 at 11:00 AM via web

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Statistics

What is expected value for this situation:

# of 8's if 50 cards are drawn WITH replacement.

b) Would this be a normal approximation?

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thilina-g | College Teacher | (Level 1) Educator

Posted June 18, 2012 at 2:52 PM (Answer #1)

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The 8's are drawn with replacement, therefore the probability of getting a 8 card is, p,

p = 4/52 = 1/13

The number of draws n is 50.

The mean = np = 50 x 1/13 = 3.84

np < 5,

Therefore we cant approximate this for a normal distribution.

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