ivanzud
  • ivanzud
The grades on the last art exam had a mean of 75%. Assume the population of grades on art exams is known to be distributed normally, with a standard deviation of 7%. Approximately what percent of students earn a score between 75% and 82%?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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campbell_st
  • campbell_st
do you are looking at the percentage of students between the mean and 1 standard deviation above the mean... look at the graph attached and see what percentage is between 0 and 1
1 Attachment
campbell_st
  • campbell_st
then you can get your answer
ivanzud
  • ivanzud
Oh Thanks! I get it now since 75+7=82, there is only 1 deviation. But if I didn't have the graph, how would i know the percentage?

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