I have four different sweaters. Every day I choose one of the four sweaters at random to wear. Let X be the number of different sweaters I wore during a 5-day week.

(For example, if my 5-day sweater sequence is 3,2,4,4,2 then X = 3 because that week I wore sweaters {2,3.4}.)

Find the mean of X.

Mean is 6

Step-by-step explanation:

Mean refers to the average of the observations.

Let X be the number of different sweaters I wore during a 5-day week.

Possible values of X = 1, 2, 3, 4

For X = 1,

For X = 2,

For X = 3,

For X = 4,

To find: Mean

Solution:

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation: