Answer:
Due to the higher z-score, Jane did better in class.
Step-by-step explanation:
Z-score:
In a set with mean
and standard deviation
, the zscore of a measure X is given by:

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this question:
Whoever's grade had the better z-score did better in class.
Mary's:
Mean of 85, standard deviation of 5, grade of 88. This means that
. So



Jane's
Mean of 80, standard deviation of 10, grade of 88. This means that
. So



Due to the higher z-score, Jane did better in class.
Add all the x up and then you add all the ones that doesn't have an x then divide those 2 together.
×=46
54
Answer:
<h3>4.008</h3><h3 /><h3>10.1</h3>
Step-by-step explanation:
<h2>I hope it will help you</h2><h2>please make me brainlest</h2>
<h2><u>THANK</u><u> U</u></h2>
Answer: The coordinates would be (4,-5)