Based on data from a USA Today Snapshot, 72% of adults have accurity concerns about online banking, Suppose 30 adults are randomly selected d) Find the probability that fewer than 10 of the adults have security concerns about online banking. e) Find the probability that between 5 and 10 (inclusive) of the adults have security concerns about online banking.

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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15. Based on data from a USA Today Snapshot, 72% of adults have accurity concerns about online banking, Suppose 30 adults are randomly selected d) Find the probability that fewer than 10 of the adults have security concerns about online banking. e) Find the probability that between 5 and 10 (inclusive) of the adults have security concerns about online banking.
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Probability of adults have accurity concerns about online banking(p)=0.72

sample size(n)=30

Let "x" adults have security concerns about online banking

x~Binomial(n=30,p=0.72)

P(X=x)=open parentheses table row straight n row straight x end table close parentheses cross times straight p to the power of straight x cross times left parenthesis 1 minus straight p right parenthesis to the power of straight n minus straight x end exponent space space space space space semicolon space straight x equals 0 comma 1 comma... comma straight n

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