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

d

step-by-step explanation:

i used the pitagoras theoreme

after 1 year: 221 deer

step-by-step explanation:

30% of 170 is 51. 170+51=221