2. stanford–binet iq test scores are normally distributed with a mean score of 100 and a standard deviation of 15. a. sketch the distribution of stanford–binet iq test scores. b. write the equation that gives the z score corresponding to a stanford–binet iq test score. sketch the distribution of such z scores. c. find the probability that a randomly selected person has an iq test score i. over 145. ii. under 91

0.0010,0.2743

Step-by-step explanation:

Given that Stanford–Binet IQ Test scores are normally distributed with a mean score of 100 and a standard deviation of 15

If x represents the scores then

X is N(100,15)

a) See enclosed file

b) Z score =

c) the probability that a randomly selected person has an IQ test score

i. Over 145.

=

ii. Under 91

=

i got 86 for this

hope this !

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depends on how many days you are talking about

step-by-step explanation: