
Questions with Answer Page

 1. State the area under the standard normal curve
 between zscores of 0 and 1.42.

 2. Given the standard normal distribution, compute
 p(z is within 1.42 standard deviations of the mean),
 p(1.42 < z < 1.42).

 3. Given the standard normal distribution, find the zscore such that
 p(z is within __ standard deviations of the mean) = 95%.

 4. Find, to two decimal places accuracy, the boundaries
 in the standard normal distribution, such that
 p(z is within __
standard deviations of the mean) = 74.98%.

 5. Using the zscores in the above table, state the lowest zscore
 which is in the top 90% of all scores.

 6. Using the zscores in the above table, state the lowest zscore
 which is in the top 85% of all scores.

 7. Compute:
 p(2.2 < z < 2.35).

 8. Compute,
 given a normal distribution,
= 3 and s = 0.4,
 p(2 < x < 4).
