Question

Help me with the workings for these questions please!!!!

Question 1 Not answered Marked out of 1.00 The speeds and colours of 1200 passenger cars passing a speed camera are recorded. Colours are recorded as being red, white or other Thirty percent are white and forty five percent are colours other then red or white. There are 397 cars which are speeding and 180 which are red and not speeding. What is the probability that a red car is speeding? Flag question Give you answer correct to three decimal places.) Answer: The correct answer is: 0.400 Qseation 2if the demand function is p-.96/In(q+1), the marginal-revenue when q-8, is Correct (Give you answer correct to three decimal places.) Mark 1.00 out of 1.00 P Flag question Answer: 26.02 The correct answer is: 26.02

Answer 1

Question 1

Total number of cars = 1,200 cars

Percentage of white cars = 30%

Percentage of cars other than white or red = 45%

Percentage of red cars = 100% - 30% - 45% = 25%

Total number of red cars = 0.25 * 1,200 = 300 cars

It is provided that 180 cars are red and not speeding.

So,

Cars that are red and speeding = Total number of red cars - Cars that are red and not speeding

Cars that are red and speeding = 300 cars - 180 cars = 120 cars

Calculate the probability that red car is speeding -

Probability = cars that are red and speeding/Total number of red cars

Probability = 120/300 = 0.400

The probability is 0.400