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4. Who did better on their test? Student 1- They got a grade of 46 on...

4. Who did better on their test?

Student 1- They got a grade of 46 on an exam whose mean was 50 with a standard deviation of 8.

Student 2- They got a grade of 60 on an exam whose mean was 75. No standard deviation was given for this exam


(8) 5. Planes can fly an average of 4900 miles with a standard deviation of 1000 miles on a tank of fuel (data is normally distributed). If I take a sample of 450 planes how many of those 450 planes on average can fly over 5600 miles on a tank of fuel?

Math   Statistics-And-Probability   
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