Question

For problems 7 through 14, find the described area under the normal curve. You can express your answer as either a percent or a probability.

7. The area between the mean and -0.87 standard deviations.

8. The area between the mean and +0.22 standard deviation.

9. The area between -0.57 and +2.31 standard deviations.

10. The area between -1.75 and +0.75 standard deviations.

11. The area between -2.00 and +2.00 standard deviations.

12. The area between -1.30 and -0.65 standard deviations.

13. The area beyond +1.21 standard deviations above the mean

14. The area beyond 1.80 standard deviations away from the mean, either above or below

Answer 1

You can refer the below link for a Z score to probabality calculator: http://davidmlane.com/hyperstat/z_table.html