0.75. This is the correct answer
Answer:
Total people = 240
Step-by-step explanation:
Let the total number of people by 'x'.
Number of children = 100
When we subtract the total number of men and women from the total people 'x', we get the number of children.
x = 20 * 12
x = 240
<h3> Total number of people = 240</h3>
Answer:
Yes, the probability distribution is valid.
Step-by-step explanation:
Given :
Income range ___ midpoint(x) ___ %
5 - 15 __________ 10 _____20%
15 - 25 _________ 20 _____13%
25- 35 _________ 30 _____ 21%
35 - 45 _________40 _____ 17%
45 - 55_________ 40 ____ 20%
55 or more _______ 50 _____9%
Yes, we do have a valid probability distributuon ; as the summation of the percentage values is equal to 100%
Answer:
$51, 200
Step-by-step explanation:
First is to find the increase of tuition
$3,200 × .8 = $2560
then subtract the year.
2020-2000=20
lastly multiply the year and the increase of tuition to know the final answer
$2560 × 20 = $51,200
