1.

Given a normal distribution with =4 and =2, what is the probability that

Question: Between what two X values (symmetrically distributed around the mean) are 95 % of the values?

Instructions

Please don't simply state the results.

1. *Draw the normal curve*
2. Insert the mean and standard deviation
3. Label the area of 95% under the curve
4. Use Z to solve the unknown X values ( lower X and Upper X)

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2.

Given a normal distribution with =4 and =2, what is the probability that

a) 5% of the values are less than what X values?

Instructions:

1. *Draw the normal curve*
2. Insert the mean and standard deviation
3. Label the area of 5% under the curve
4. Use Z formula to solve for the unknown X value