. IQ scores have a normal distribution with μ = 90 and σ = 10. a)...

Question

Question

. IQ scores have a normal distribution with μ = 90 and

σ

= 10.

a) Find the probability for a score over 100.

b) Find the score needed for the top 5%.

c) Find the probability that the mean of 10 scores is under 80. (Hint: use CLT)

math Statistics-And-Probability

Answer 1

Answer #1

Answer 2

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