151k views
0 votes
Pls help me, im overworked by school and didnt focus in this lesson

Pls help me, im overworked by school and didnt focus in this lesson-example-1

1 Answer

2 votes

Answer:

55%

Explanation:

the question is asking what is the probability he has 8 hours of sleep GIVEN he has had 0 cups.

we find the number where 0 cups and 8 hours meets. that is 12.

divide that by P(0 cups). P(0 cups) is total of 0 cups, ie 22.

so answer is (12/72) / (22/72)

= 12/22

= 6/11

= 0.5454

= 55% to nearest whole percent

User Yusuf Khan
by
7.7k points