anonymous
  • anonymous
The grades on the last science exam had a mean of 89%. Assume the population of grades on science exams is known to be distributed normally, with a standard deviation of 14%. Approximately what percent of students earn a score between 75% and 89%?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
38.5% 15.7% 50% 34.1%
anonymous
  • anonymous
I know i have to use the z score to find the answer.. but im not sure what to use for z or x
anonymous
  • anonymous
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anonymous
  • anonymous
this is what i have so far
anonymous
  • anonymous
@Peaches15

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