Use the binomial formula to find the indicated probabilities:
1. The probability of observing 5 heads on 10 tosses of a fair coin.
1. The probability of observing 5 heads on 10 tosses of a fair coin.
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it would be (10 C 5) (0.5)^5 (0.5)^5 = 0.246
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p = .5^10 x 10C5
= .5^10 x 10!/5!5!
= .5^10 x 252
= 0.24609375 or approx. 24.61%
= .5^10 x 10!/5!5!
= .5^10 x 252
= 0.24609375 or approx. 24.61%