Mathematics, 15.02.2022 07:40 hjeffrey168

A breathalyser test is used by police in an area to determine whether a driver has an excess of alcohol in their blood. The device is not totally reliable: 6 % of drivers who have not consumed an excess of alcohol give a reading from the breathalyser as being above the legal limit, while 10 % of drivers who are above the legal limit will give a reading below that level. Suppose that in fact 17 % of drivers are above the legal alcohol limit, and the police stop a driver at random. Give answers to the following to four decimal places. Required:
a. What is the probability that the driver is incorrectly classified as being over the limit?
b. What is the probability that the driver is correctly classified as being over the limit?
c. Find the probability that the driver gives a breathalyser test reading that is over the limit.
d. Find the probability that the driver is under the legal limit, given the breathalyser reading is also below the limit.

Answers: 3

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 15:00

The image of the point (-6, -2)under a translation is (−7,0). find the coordinates of the image of the point (7,0) under the same translation.

Answers: 1

Answer

Mathematics, 21.06.2019 17:30

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Answers: 1

Answer

Mathematics, 21.06.2019 18:50

Which of the following is a function? a.) {(-2, -4/5), (-1,-,,-1)} b.) {(-2,,1/,3/,1)} c.) {(-22)} d.) {(-21)}

Answers: 3

Answer

Mathematics, 21.06.2019 23:00

The equation represents the function f, and the graph represents the function g. f(x)=3(5/2)^x determine the relationship between the growth factors of f and g. a. the growth factor of g is twice the growth factor of f. b. the growth factor of f is twice the growth factor of g. c. the growth factor of f is 2.5 times the growth factor of g. d. the growth factor of f is the same as the growth factor of g.

Answers: 3

Answer

You know the right answer?

A breathalyser test is used by police in an area to determine whether a driver has an excess of alco...

Questions