Mathematics, 05.12.2019 02:31, sammy16940
The probability of drawing a heart from a standard deck of cards is 0.25. you record the car do you draw and return the car before shuffling to ensure a binomial distribution. if you do this 20 times, what is the probability that you will draw a heart seven times.
a) 0.888
b) 0.001
c) 0.112
d) 0.473
Answers: 3
![P(X=7)=\dfrac{20!}{7!(20-7)!}(0.25)^7(1-0.25)^{20-7}\ \ [\because\ ^nC_r=\dfrac{n!}{r!(n-r)!}]](/tpl/images/0403/8361/3cb33.png)
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The probability of drawing a heart from a standard deck of cards is 0.25. you record the car do you...
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