Revious 1
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Data and the Normal Distribution: Mastery Test
The heights of the pine trees in a certain forest are normally distributed, with a mean of 86 feet and a standard deviation of 8 feet.
Approximately what percentage of the pine trees in this forest are taller than 100 feet?
0.09
Table shows values to the LEFT of the z-score
Z 0.02 0.03 0.04 0.05 0.06 0.07 0.08
1.6 0.94738 0.94845 0.94950 0.95053 0.95154 0.95254 0.95352 0.95449
1.7 0.95728 0.95818 0.95907 0.95994 0.96080 0.96164 0.96246 0.96327
1.8 0.96562 0.96638 0.96712 0.96784 0.96856 0.96926 0.96995 0.97062
1.9 0.97257 0.97320 0.97381 0.97441 0.97500 0.97558 0.97615 0.97670
2.0 0.97831 0.97882 0.97932 0.97982 0.98030 0.98077 0.98124 0.98169
-2.0 0.02169 0.02118 0.02068 0.02018 0.01970 0.01923 0.01876 0.01831
-1.9 0.02743 0.02680 0.02619 0.02559 0.02500 0.02442 0.02385 0.02330
-1.8 0.03438 0.03362 0.03288 0.03216 0.03144 0.03074 0.03005 0.02938
-1.7 0.04272 0.04182 0.04093 0.04006 0.03920 0.03836 0.03754 0.03673
-1.6 0.05262 0.05155 0.05050 0.04947 0.04846 0.04746 0.04648 0.04551
OA 49
OB
84%
OC.
9696
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