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Find the mean & standard deviation
x p(x)
4 0.2
7 0.31
12 0.24
15 0.18
18 0.07
BINOMIAL
DISTRIBUTION
FORMULA
Section 6.3A
Binomial Experiment - BINS
• Binary?
• There are two possible outcomes – success and failure
• Independent?
• Trials must be independent
• Number?
• The number of trials must be fixed – out of n….
• Success?
• On each trial the probability of success must be the same
Let E be the event that a person goes out shopping on Black Friday. Find
the probability distribution for a sample of 3 people if the P(E) = .78.
Probability distribution of going shopping on black
Friday for 4 people. P(E) = .78
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