SOLUTION: A nationwide test taken by high school sophomores and juniors has three sections, each scored on a scale of to . In a recent year, the national mean score for the writing section
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Question 387546: A nationwide test taken by high school sophomores and juniors has three sections, each scored on a scale of to . In a recent year, the national mean score for the writing section was , with a standard deviation of . Based on this information, complete the following statements about the distribution of the scores on the writing section for the recent year.
a. according to Chebyshevs therom, at least 8/9 of the scores lie between what. round to 1 decimal place
b.according to Chebysev therom, at least what % lies between 28.7 and 72.7
c.supposed the distrubution is bell shaped. according to the empirical rule, approx what percentof the scores lie between 28.7 and 72.7
d. suppose that the distubution list is bel shaped, according to the empiricial rule approx 68 % of the scores are between what
iam so lost on this ,not sure where to start Answer by stanbon(75887) (Show Source):
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