Question

The test scores 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 students have a test score between 61 and 89?
c. What is the probability that a student chosen at random has a test score between 54 and 75?
d. Approximately how many students have a test score greater than or equal 96?

Answer 1

Answer:

i tjink 0.147 is the answer hope