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Question

Given a normal distribution with m = 70 and s = 20, what is the probability that

a. X > 110.

b. X < 10.

c. X < 70 or X > 130.

d. Between what two X values (symmetrically distributed around the mean) are 70% of the values.

Solution

VerifiedAnswered 9 months ago

Answered 9 months ago

Step 1

1 of 19**a)** Let us define the parameters for a normal distribution

- $\mu = 70$,
- $\sigma = 20$.

We should find the probability that $X > 100$.

*How do you standardize normal distribution?*

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