1. If a one-person household spends an average of $60 per week on groceries, find the maximum and minimum dollar amount spent per week for the middle 40% of one-person households if the
standard deviation is $7 per week.

c

step-by-step explanation:

1. 22

2. 1

3. 7

4. 18

step-by-step explanation

e2020 got it right

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b