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20 percent of students score

The mean score on a Math exam was 50% and the standard deviation was 10%. Assume the results were normally distributed.(a) What
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Seven students took a quiz. Four of these students received a score above 85 percent. Students who received at least an 85
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Seven students took a quiz. Four of these students received a score above 85 percent. Students who received at least an 85
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Seven students took a quiz. Four of these students received a score above 85 percent. Students who received at least an 85
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Seven students took a quiz. Four of these students received a score above 85 percent. Students who received at least an 85
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20 percent of students score 80 to 90 percent on last test. In a class of 30, how many students does this include?
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Below are the final grades for Mr. Campbell's class. What is the difference between the highest grade and the lowest grade?A
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Below are the final grades for Mrs. Stockton's class. What is the difference between the highest grade and the lowest grade?A
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Below are the final grades for Mrs. Riley's class. What is the difference between the highest grade and the lowest grade?A table
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Below are the final grades for Ms. Romero's class. What is the difference between the highest grade and the lowest grade?A table
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