Trouble with empirical rule

[sulli81]

Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.61 and a standard deviation of 0.4. Using the empirical rule, what percentage of the students have grade point averages that are between 1.81 and 3.41?

 

[Otis]

Please read the forum guidelines.

What did you find, when you looked up the Empirical Rule?

?

 

[Deleted member 4993]

Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.61 and a standard deviation of 0.4. Using the empirical rule, what percentage of the students have grade point averages that are between 1.81 and 3.41?

have you studied z-distribution ?

 

[Harry_the_cat]

Have you seen something like this before?

 

[StatsSolver]