Denise G. answered • 08/20/20
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what percentage of scores is less than 100?
100 is the mean. 50% would be less than this.
what percentage of scores is greater than 110?
since 10 is one standard deviation, 110 is + 1 standard deviation You would have 50%(under 100)+34%(between 100 and 110, it is half of 68 in this section) = 84%. Percentage greater than 110 would be 100-84 = 16%
What percentage of scores are between 80 and 110?
80 is - 2 standard deviations and 110 is + 1 standard deviation. 68%(90 to 110)+ 13.5%(80 to 90, this is (95-68)/2 = 13.5) = 81.5%
Denise G.
tutor
Sorry I read the problem incorrectly. I calculated less than if you look at the explanation I provided. Since they have to total to 100%, that is why the correct answer is 16.
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08/21/20
Yola N.
The percentage of scores greater than 110 came back with an answer of 16 not 8408/20/20