Assume that IQ scores follow a normal distribution with a mean of 100 and a standard deviation

Question:

Assume that IQ scores follow a normal distribution with a mean of 100 and a standard deviation of 16.

a. What is the probability that an individual scores between 84 and 116?

b. What is the probability that an individual scores less than 68?

c. What is the lowest score that will place an individual in the top 1% of IQ scores?

Distribution
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