Nevada F.
asked • 02/08/17how to find the powers when doing bionomial experiment problems
The probability that a machine part is defective is 10%. Find the probability that exactly 2 parts are defective in a sample of 8 parts.
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1 Expert Answer
Kenneth S. answered • 02/08/17
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Algebra II EXPERT will help you survive & prosper
Any one term of a binomial distribution consists of nCr times prqn-r
where probability of success is p,
probability of failure is q= 1 - p,
n is # of trials, r is number of successes.
In your case, q=0.1 so p = 0.9, n = 8, r = 2.
Now you can compute! 8C6 = 8C2 = 28, BTW.
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Kenneth S.
Using the Binomial Distribution Commands on TI-83 OR -84:
Commands for binomial distributions (Bernoulli Trials), p = PROBABILITY OF SUCCESS, n TRIALS:
• binompdf (n, p) to produce the entire list of probabilities, x from 0 to n
• binomcdf (n, p, k) to get the (cumulative) probability of any x value from 0 to k.
02/08/17