Diego and Bradley began arguing about who did better on their tests, but they couldn't decide who did better given that they took different tests. Diego took a test in Math and earned a 73, and Bradley took a test in Social Studies and earned a 60.8. Use the fact that all the students' test grades in the Math class had a mean of 73.2 and a standard deviation of 11.8, and all the students' test grades in Social Studies had a mean of 64.4 and a standard deviation of 10.4 to answer the following questions. a. Calculate the Z-score for Isaac's test grade.
b. Calculate the 2-score for lan's test grade.
c. Which person did relatively better?

care to share were the trapezoid shown is ?

0 and 5 minutes

step-by-step explanation:

given that one morning eight buses arrive late by the number of minutes given below:

0 8 2 6 9 2 0 7 8

write these in ascending order

0   0 2 6 7 8 8 9

in the afternoon two more buses arrive at the bus stop say by x and y minutes late.

total number of buses = 10

median = average of 4th and 5th after arranging in ascending order

since 4th entry is 6, the values of x and y should be below 6

also given 0 is the mode so either x or y or both should be 0 because then only 0 gets the maximum frequency and hence mode

thus we have

0 0 0 2 6 7 8 8 9 and another unknown entry which is below 6.

since median is 3.5, we have the unknown entry to be 5 only because then only median =( 2+5)/2

thus the after noon buses were late by 0 and 5 minutes.