(b) we often read that iq scores for large populations are centered at 100. what percent of these 78 students have scores above

Question

eduard

2 years ago

6

(b) we often read that iq scores for large populations are centered at 100. what percent of these 78 students have scores above

100? (round your answer to one decimal place.)

Mathematics

1 answer:

ss7ja [257] · Answer 1 · 2023-12-11T14:59:44+03:00

As IQ scores for extensive populaces are focused at 100, the mean = 100.
There ought to be around half scores above or underneath the mean score since mean and middle is about a similar when the populace is substantial.
P(x > 100) = P( z> (100 - 100)/sd ) = P(z > 0)= 0.5
The number of the student who has scored over 100 = 0.5 x 78 = 39 Therefore the answer is 39 students.