Question

Just tell me if I'm right.

Answer 1

Bryce is testing whether school is more enjoyable when students are making high grades. He asked 100 students if they enjoyed school and whether their GPA was above or below 3.0. He found that 33 of the 40 students with a GPA above 3.0 reported that they enjoyed school, and 5 of the 60 students with a GPA below 3.0 reported that they enjoyed school. What is the probability that a student with a GPA below 3.0 does not enjoy school?

Answer 2

Is it 92%?

Answer 3

Please be 100% sure as well. thanks!

Answer 4

yes it is 92%!!!!

Answer 5

@BritBratt13 are you 100% sure? it's for a test and i need it to be right.

Answer 6

I am sure!

Answer 7

Awesome! Thank you :)

Answer 8

@BritBratt13 do you mind helping me with one more?

Answer 9

just tell me what it is! :)

Answer 10

The grades on the last history exam had a mean of 75%. Assume the population of grades on history exams is known to be normally distributed with a standard deviation of 7. What percent of students earn a score between 70% and 82%?

Answer 11

The answer choices are:

0.6285
0.6101
0.6024
0.5892

Answer 12

@BritBratt13

Answer 13

it is the third one down! :)

Answer 14

Are you sure? @BritBratt13

Answer 15

yep!

Answer 16

Thanks again, @BritBratt13 ! :)