Rectangle with the width of 23 and ten because if u have 236 and so you divide it by 23 since that is the width and then you get ten reminder 6. yeah btw iam in 5th grade and 23 cannot go into 6.
Divide the equation by six to get:
5+3=5+y
Subtract 5 from both sides to find that y=3.
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.