Z-Score Formula
What is the Z-Score Formula?
x - u
z = --------------
o
These types of problems must include what 2 words in order to be able to do the work.
Bonus Points if you can tell me the words we can mark out the problem.
Normally Distributed.
Left Skewed and Right Skewed
How many different outfits can Mr. T make if he has 5 shirts, 12 pants, and 3 hats?
180
From mean, median, mode, and range, which ones can you plug into your calculator to get the answer without doing it by hand?
mean and median
Chloe took Mr. T's math test and scored an 89. If Mr. T's Test had a mean of an 80 and a standard deviation of 3, what is Chloe's Z-score?
z = 3
What are the 4 percentages you need to have memorized?
0.15%, 2.35%, 13.5%, 34%
How many ways can 4 candy bars be chosen from a store that sells 30 candy bars
27405
Give me the definitions of mean, median, and mode
Mean = average
median = "middle" man
mode= most repeated
Avery wanted to know what her score was on the multiplication test she took last Friday. Mr. T told her she had a z score of 1.5. What was Avery's grade if the class average was a 76 and the standard deviation was a 2?
X = 79
Draw a normal distribution graph where the mean is 57 and the standard deviation is 4. Don't forget your percentages!
I will draw it for you
How many ways can you make a 3-letter arrangements out of the letters in the word TRAPEZOID?
504
Find the mean, median, and mode of the following list:
{15,12,17,15,16,19,25,35}
mean = 19.25
median = 16.5
mode = 15
Your mom got a 90 on the latest pop quiz in math class. The mean for the class was an 84. Your mom's z score was 1.5, find the standard deviation.
o = 4
A set of 125 golf scores are right skewed with a mean of 76 and a standard deviation of 5. What is the probability that a score is no more than 81?
ummmmm. I can't do this problem....
How many ways can 12 swimmers finish in 1st, 2nd, and 3rd place?
1320
The Daily Bugle is measuring spider-man's web slinging abilities around New York. His web slinging abilities are measured using a protractor where the standard deviation is 3.5 degrees for his web. If his last measurement was a 72 degree angle with a z-score of 0.6, find the mean angle of his web slinging ability.
69.9
A standard normal distribution graph has what mean and what standard deviation?
mean = 0 and standard deviation = 1
You have enough tickets to play 6 different games at the amusement park. If there are 14 games, how many ways can you choose 6?
3003