The following are two sets of class scores (you may consider these scores to be
normally distributed). Julia received the two scores marked with an asterisk.
Did she do better or worse on the second test? Why? (16 points)
First
Test
48 *56 61 60 39 49 5 57 52 51
Second
Test
75 81 63 *74 59 88 77 79 76 69 67
I feel like this is a trick question, but i'm not sure help!

Question

The following are two sets of class scores (you may consider these scores to be
normally distributed). Julia received the two scores marked with an asterisk.
Did she do better or worse on the second test? Why? (16 points)
First
Test
48 *56 61 60 39 49 5 57 52 51
Second
Test
75 81 63 *74 59 88 77 79 76 69 67
I feel like this is a trick question, but i'm not sure help!

anonymous · Answer

I think they want the larger z score, that is the standardized score . it takes into account the spread

anonymous · Answer

so i have to find the standard deviation and mean of the data sets, and then find the z-score? @jayzdd

anonymous · Answer

yes

anonymous · Answer

the mean for the first set of tests is  48.8
the mean for the second set of tests is 73.45
you can also find the standard deviation 
i am assuming population standard deviation.