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Find the proportion of students with the score

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Reference no: EM132852384

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

Reference no: EM132852384

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