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Mathematics, 27.12.2020 15:10 VamLS6316
The amount of time devoted to studying statistics each week by students who achieve a
grade of A in the course is normally distributed with a mean of 7.5 hours and a standard
deviation of 2.1 hours.
a. What proportion of A students study for more than 10 hours per week.
b. Find the probability that an A student spends between 7 and 9 hour
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Answers: 3
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