Question

Are your finances, buying habits, medical records, and phone calls really private? A real concern for many adults is that computers and the Internet are reducing privacy. A survey conducted by Peter D. Hart Research Associates for the Shell Poll was reported in USA Today. According to the survey, 42% of adults are concerned that employers are monitoring phone calls. Use the binomial distribution formula to calculate the probability of the following. (a) Out of four adults, none is concerned that employers are monitoring phone calls. (Round your answer to three decimal places.) (b) Out of four adults, all are concerned that employers are monitoring phone calls. (Round your answer to three decimal places.) (c) Out of four adults, exactly two are concerned that employers are monitoring phone calls. (Round your answer to three decimal places.)

Answer #1

Probability of adults that are concerned that employers are monitoring phone calls, p =0.42

Probability of adults that are not concerned that employers are monitoring phone calls, q = 1 - 0.42 = 0.58

n= 4

Binomial distribution:

a) Probability that none of the 4 adults is concerned that employers are monitoring phone calls, P(X=0)

b) Probability that all 4 adults are concerned that employers are monitoring phone calls, P(X = 4)

c) Probability that exactly 2 adults are concerned that employers are monitoring phone calls, P(X = 2)

Are your finances, buying habits, medical records, and phone
calls really private? A real concern for many adults is that
computers and the Internet are reducing privacy. A survey conducted
by Peter D. Hart Research Associates for the Shell Poll was
reported in USA Today. According to the survey, 37% of adults are
concerned that employers are monitoring phone calls. Use the
binomial distribution formula to calculate the probability of the
following.
(a) Out of four adults, none is concerned...

Are your finances, buying habits, medical records, and phone
calls really private? A real concern for many adults is that
computers and the Internet are reducing privacy. A survey conducted
by Peter D. Hart Research Associates for the Shell Poll was
reported in USA Today. According to the survey, 42% of
adults are concerned that employers are monitoring phone calls. Use
the binomial distribution formula to calculate the probability of
the following.
(a) Out of five adults, none is concerned...

Are your finances, buying habits, medical records, and phone
calls really private? A real concern for many adults is that
computers and the Internet are reducing privacy. A survey conducted
by Peter D. Hart Research Associates for the Shell Poll was
reported in USA Today. According to the survey, 51% of
adults are concerned that employers are monitoring phone calls. Use
the binomial distribution formula to calculate the probability of
the following.
(a) Out of five adults, none is concerned...

Are your finances, buying habits, medical records, and phone
calls really private? A real concern for many adults is that
computers and the Internet are reducing privacy. A survey conducted
by Peter D. Hart Research Associates for the Shell Poll was
reported in USA Today. According to the survey, 37% of
adults are concerned that employers are monitoring phone calls. Use
the binomial distribution formula to calculate the probability of
the following.
(a) Out of five adults, none is concerned...

1. USA Today reported that approximately 25% of all
state prison inmates released on parole become repeat offenders
while on parole. Suppose the parole board is examining five
prisoners up for parole. Let x = number of prisoners out
of five on parole who become repeat offenders.
x
0
1
2
3
4
5
P(x)
0.223
0.375
0.217
0.153
0.031
0.001
(a) Find the probability that one or more of the five parolees
will be repeat offenders. (Round your answer...

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