Question

36% adults favor the use of unmanned drones by police agencies.
Twelve U.S. adults are randomly selected. Find the probability that
the number of U.S. adults who favor the use of unmanned drones by
police agencies is (a) exactly three, (b) at least four, (c)
less than eight.

A.) P(3)=

B.) P(x>4)=

C.) P(x<8)=

round to 3 decimal places

Answer #1

SOLUTION-

LET X BE THE NO OF ADULTS THAT FAVOUR DRONES.

X~ BINOMIAL(n,p)

THE PMF IS GIVEN AS,

HERE, n= 12 and p=0.36

1.)

= 0.1849 ~ **0.185**

2.)

=

= 1- 0.0047- 0.0319- 0.1849- 0.2340

= 0.5445 ~ **0.544**

3.)

=

= 1- 0.0234- 0.0059- 0.0010- 0.0001- 0.0000

= 0.9755 ~ **0.976**

********IN CASE OF DOUBT, COMMENT BELOW. ALSO
**LIKE** THE SOLUTION, IF POSSIBLE.

16% adults favor the use of unmanned drones by police agencies.
Twelve U.S. adults are randomly selected. Find the probability that
the number of U.S. adults who favor the use of unmanned drones by
police agencies is (a) exactly three, (b) at least four, (c)
less than eight
(a)P(3)=?

39% adults favor the use of unmanned drones by police agencies.
Twelve U.S. adults are randomly selected. Find the probability that
the number of U.S. adults who favor the use of unmanned drones by
police agencies is (a) exactly three, (b) at least four, (c)
less than eight.

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Twelve U.S. adults are randomly selected. Find the probability that
the number of U.S. adults who favor the use of unmanned drones by
police agencies is (a) exactly three, (b) at least four, (c)
less than eight.

4.2.20 38% adults favor the use of unmanned drones by police
agencies. Twelve U.S. adults are randomly selected. Find the
probability that the number of U.S. adults who favor the use of
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Total
Gender
Adults
Men
Women
Do you favor or
oppose the use of unmanned drones by police agencies in the United
States?
Favor
36%
44%
27%
Oppose
39%
39%
39%
Not
sure
25%
17%
33%
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(Round to three decimal places as needed.)
(b) P(x≥6) = ?
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(c) P(x<4) = ?
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Assume that when adults with smartphones are randomly selected,
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