Q/ The test score of a physics class with 800 students are distributed normally with a mean of 75 and a standard deviation of 7. (a) what percentage of the class has a test score between 68 and 82 (b) approximately how many student have a test score between 61 and 89 (c) what is the probability that a student chosen at random has a test score greater than or equal 96?

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Q/ The test score of a physics class with 800 students are distributed
normally with a mean of 75 and a standard deviation of 7. (a) what
percentage of the class has a test score between 68 and 82 (b)
approximately how many student have a test score between 61 and
89 (c) what is the probability that a student chosen at random has a
test score greater than or equal 96?
Transcribed Image Text:Q/ The test score of a physics class with 800 students are distributed normally with a mean of 75 and a standard deviation of 7. (a) what percentage of the class has a test score between 68 and 82 (b) approximately how many student have a test score between 61 and 89 (c) what is the probability that a student chosen at random has a test score greater than or equal 96?
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