Using the binomial probability relation ; the probability that an head is obtained at least 50 times is 0.0271
<u>Using the binomial probability relation</u> :
- P(x = x) = nCx * p^x * q^(n-x)
- p = probability of success = 0.4
- q = 1 - p = 0.6
- n = number of trials = 100
P(x ≥ 50) = p(x = 50) + p(x = 51) + ...+ p(x = 100)
<u>Using a binomial probability calculator</u> :
P(x ≥ 100) = 0.0271
Therefore, the probability that atleast 50 heads are obtained in the trial is 0.0271
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Answer:
8 & 2.
Step-by-step explanation:
first number = x-6
second number = x
2(x) + 6(x-6) =28
2x + 6x -36 = 28
8x = 28+36
8x = 64
divide both sides by 8.
x = 8.
x-6 = 8-6 = 2.