Question

One number is selected from numbers 3, 5, 5, 7, 7, 9, 9, 9, 9 Find the probability of an event that

selected number is mean of given number​

Answer 1

Answer:

their is a 2/9 chance of number selected number is the mean of given number

Step-by-step explanation:

>first step is to find mean:

add entire given equation then divide by the amount of numbers given

3+5+5+7+7+9+9+9+9= 63

63/9 = 7

mean is 7

>second step find the probability:

since 7 is the mean find how many times 7 appears within

(3 5,5,7,7,9,9,9,9)

7 appears 2 times within the number so the place the amount of times the number appears (2) over the amount of number given which is 9

=2/9