Answer:
Let me know if you want more explanation
Step-by-step explanation:
Alright, to solve for x we need 2 angles that are congruent or equal.
I'm going to use the two we will need later. KLN and MNL
Now to find x ^^
Now we just need to plug it into each angle. I'm going to show you them separately.
should be right now.
Answer:
a) Option C) The score was 2.49 standard deviations higher than the mean score in the class.
b) 2.3%
Step-by-step explanation:
a) We are given that the distribution of test grades is a bell shaped distribution that is a normal distribution.
Formula:
Option C) The score was 2.49 standard deviations higher than the mean score in the class.
b) The z-score for a particular score is -2.
We have to evaluate
P(z < -2)
Calculating the value from normal z-table.
Thus, 2.3% of of the class scored lower than my friend.