Round answers to three decimal places. Area of 1st rectangle = 0.032
Area of 2nd rectangle 25 x f(675) =25 x 0.000863
= 0.022
Area of 3rd rectangle = 0.014
Area of 4th rectangle = 0.008
Area of 5th rectangle = 0.004
Area of 6th rectangle = 0.002
Total area = 0.082

Rounding the given answers to three decimal places

The Area of 1st rectangle ≈ 0.032

Area of 2nd rectangle =25 x 0.000863  ≈ 0.022

The Area of 3rd rectangle ≈ 0.014

The Area of 4th rectangle ≈ 0.008

The Area of 5th rectangle ≈ 0.004

The Area of 6th rectangle ≈ 0.002

Hence The Total area ≈ 0.082 ​

Step-by-step explanation:

Rounding the given answers to three decimal places

The Area of 1st rectangle ≈ 0.032

Area of 2nd rectangle =25 x 0.000863  ≈ 0.022

The Area of 3rd rectangle ≈ 0.014

The Area of 4th rectangle ≈ 0.008

The Area of 5th rectangle ≈ 0.004

The Area of 6th rectangle ≈ 0.002

Hence The Total area ≈ 0.082 ​

(a)

Number of cars with defective turn signals = 65

Number of cars with no defective turn signals = 410 - 65 = 345

Required probability:

(b)

Number of cars with defects = 65 + 35 = 100

Number of cars with no defects = 410 - 100 = 310

Required probability: