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250 Year 1 students took an Intermediate level Statistics test. The scores were normally distributed with a mean of 70 and a standard deviation of 5. i) What percentage of scored are between scores 65 and 75? ii) What percentage of scored are between scores 60 and 85? iii) What percentage of scores is greater than a score of 80? iv) Approximately how many scored between scores of 60 and 70 ? ii) What interval contains 95% of all X values? iii) What interval contains 99% of all X values?

250 Year 1 students took an Intermediate level Statistics test. The scores were normally distributed with a mean of 70 and a standard deviation of 5. i) What percentage of scored are between scores 65 and 75? ii) What percentage of scored are between scores 60 and 85? iii) What percentage of scores is greater than a score of 80? iv) Approximately how many scored between scores of 60 and 70 ? ii) What interval contains 95% of all X values? iii) What interval contains 99% of all X values?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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250 Year 1 students took an Intermediate level Statistics test. The scores were normally distributed with a mean of 70 and a standard deviation of 5. i) What percentage of scored are between scores 65 and 75? ii) What percentage of scored are between scores 60 and 85? iii) What percentage of scores is greater than a score of 80? iv) Approximately how many scored between scores of 60 and 70 ? ii) What interval contains 95% of all X values? iii) What interval contains 99% of all X values?
Transcribed Image Text:250 Year 1 students took an Intermediate level Statistics test. The scores were normally distributed with a mean of 70 and a standard deviation of 5. i) What percentage of scored are between scores 65 and 75? ii) What percentage of scored are between scores 60 and 85? iii) What percentage of scores is greater than a score of 80? iv) Approximately how many scored between scores of 60 and 70 ? ii) What interval contains 95% of all X values? iii) What interval contains 99% of all X values?
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