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1. Assume the IQ scores of the students at UNC has a normal distribution with the mean of 100 and standard deviation of 15.
(a) Find the proportion of students with the score:
a. Greater than 65
b. Less than 72
c. Between 60 and 80
d. Greater than 71 or less than 61
P (x<61) +P(x>71)= .00466 + .9734= .97806 or 97%
(b) Find the Q1 and Q3 for the IQ score
(c) Find the value with 95% of scores below it
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1.most days you are good. but some days you are bad. each day there is a 99 chance you are good and a 1 chance you are
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