According to insurance records, a car with a certain protection system will be recovered 85% of the time. if 100 stolen cars are randomly selected, what is the mean and standard deviation of the number of cars recovered after being stolen?

Write 85% as a decimal: 0.85

To find the mean, multiply the sample by the percentage:

Mean = 100 x 0.85 = 85

The standard deviation formula: √n*p*(1-p)

n = sample

p = percentage

Standard deviation = √(100 * 0.85 * (1-0.85)

Standard deviation = 3.57

what does x eaqual

step-by-step explanation:

a

step-by-step explanation:

when a number is between two straight lines it means the absolute value.

to find absolute value you need to know how many numbers is that number away from 0.

when finding absolute value the number will always come out positive

so absolute value of -3 is 3

absolute value of 3/2 is 3/2

absolute value of -2 is 2

absolute value of 3.5 is 3.5

absolute value of -1 is 1

now put these numbers in order:

a)   |-1|, |3/2|, |-2|, |-3|, |3.5|