A certain standardized test's math scores have a bell-shaped distribution with a mean of 530 and a standard deviation of 119. Complete parts (a) through (c). 99.7% of data are within 3 standard deviations of the mean (u- 3ơ to p + 30) 95% within 2 standard deviations 68% within 1 standard deviation 34% 34% 0.15% 2.35% 2.35% 0.15% 13.5% 13.5% u- 30 - 20 u+ 20 u+ 30 (a) What percentage of standardized test scores is between 173 and 887? % (Round to the nearest tenth as needed.) (b) What percentage of standardized test scores is less than 173 or greater than 887? % (Round to the nearest tenth as needed.) (c) What percentage of standardized test scores is greater than 768? % (Round to the nearest tenth as needed.)
A certain standardized test's math scores have a bell-shaped distribution with a mean of 530 and a standard deviation of 119. Complete parts (a) through (c). 99.7% of data are within 3 standard deviations of the mean (u- 3ơ to p + 30) 95% within 2 standard deviations 68% within 1 standard deviation 34% 34% 0.15% 2.35% 2.35% 0.15% 13.5% 13.5% u- 30 - 20 u+ 20 u+ 30 (a) What percentage of standardized test scores is between 173 and 887? % (Round to the nearest tenth as needed.) (b) What percentage of standardized test scores is less than 173 or greater than 887? % (Round to the nearest tenth as needed.) (c) What percentage of standardized test scores is greater than 768? % (Round to the nearest tenth as needed.)
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
Transcribed Image Text:A certain standardized test's math scores have a bell-shaped distribution with a mean of 530 and a standard deviation of 119. Complete parts (a) through (c).
99.7% of data are within
3 standard deviations of
the mean (u - 3ơ to µ + 3ơ)
95% within
2 standard deviations
-68% within
1 standard
deviation
34%
34%
0.15%
2.35%
2.35%
0.15%
13.5%
13.5%
3ơ
L- 20
u+ 20
u+ 30
(a) What percentage of standardized test scores is between 173 and 887?
% (Round to the nearest tenth as needed.)
(b) What percentage of standardized test scores is less than 173 or greater than 887?
% (Round to the nearest tenth as needed.)
(c) What percentage of standardized test scores is greater than 768?
% (Round to the nearest tenth as needed.)
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