Question

Using the table, give the percentage associated with each unit of standard deviation in the standard normal curve to the nearest hundredth.

Answer 1

Percentages (in order):

34.13%

34.13%

47.72%

49.87%

81.85% (34.13 + 47.72)

Answer 2

Explanation:

Given is a std normal probability table and we are to find out the percentage

Std deviation Area covered Percentage area

-1 to 0 0.3413 34.13%

0 to 1 0.3413 34.13%

0 to 2 0.4772 47.72%

0 to 3 0.4987 49.87%

-1 to 2 0.3413+0.4987 84.00%