The average and standard deviation of a measurement is 15.0 ± 5.0. if 100 students measured the value, how many would you expect to get a value greater than 20?

Solution: We are given:

Using the empirical rule, we have:

covers 68% of data.

Also the percentage of values below mean = Percentage of values above mean = 50%

Now, let's find the z score for x=20

Therefore, the percentage of values greater than 1 standard deviation above mean

Expected number of students = 16% of 100 = 16

the range is 19

step-by-step explanation:

the range is biggest number minus the smallest, so in this case it would be

41 - 22 = 19

answer: procent 54 wynosi 33,33%