2 machine 23% defective widget 1 machine 8% defective new produce 3 x more probability not defective?

Question

The probability residents own 2 cars with annual income is over 25,000 is 80%. A survey 60% incomes over 25,000 and 70% had 2 cars. The probability a household own 2 cars and have a income over 25,000 a year is

ages of uninsured citizens 60 61 62 63 64 65 66 68 69 70 73 73 74 75 76 81 81 82 86 87 89 90 92

What type of shape does the distributions of th sample appear as

also calculate the variance of the ages of the uninsured citizens to the nearest hundredth of a year squared

Answer 1

Please edit your question. it is very difficult to understand the first paragraph (about the defective machines).