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Flura [38]
3 years ago
7

It is estimated that 78% of drivers use their turn signal. How many people should a police officer expect to pull over until she

finds a driver not using the turn signal?
5

3

4

2

6
Advanced Placement (AP)
2 answers:
MrRissso [65]3 years ago
6 0

Answer:

5 people

Explanation:

Given

Let P =Percentage of people using signal

P = 78%

Let Q = Percentage of people not using signal

P + Q = 1 ---- Make Q the subject of formula

Q = 1 - 78%

Q = 1 - 0.78

Q = 0.22

The expected number of people is calculated as 1/Q

= 1/0.22

= 4.54

= 5 ---- Approximated

Hence, the expected number of people a police officer expects to pull over until she finds a driver not using the turn signal is 5

Juli2301 [7.4K]3 years ago
5 0

Answer:

5

Explanation:

People not using signal=0.22

police officer expect to pull over until she finds a driver not using the turn signal=1/0.22=4.5=5

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