Mr. Smith has 100 students in his Algebra classes. The grades of a quiz are normally distributed with a mean of 70 and a standard deviation of 4. Sally claims that 75 students scored between 66 and 74 on this quiz. Given that this is normally distributed, is Sally correct? Justify your answer using mathematical reasoning and your knowledge of normal distributions.
I need help with this fast and needs to be detailed
But the problem demands that you use YOUR mathematical reasoning and YOUR knowledge of normal distribution.
I don't know what YOU know.