Chapter 8 AP Stats
Quiz
•
Mathematics
•
11th Grade
•
Practice Problem
•
Hard
Anthony Clark
FREE Resource
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15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A different species of cockroach has weights that are approximately Normally distributed with a mean of 50 grams. After measuring the weights of many of these cockroaches, a lab assistant reports that 14% of the cockroaches weigh more than 55 grams. Based on this report, what is the approximate standard deviation of weight for this species of cockroaches?
4.6
5.0
6.2
4.0
Cannot determine without more information
2.
FILL IN THE BLANK QUESTION
1 min • 5 pts
With a mean of 62 and standard deviation of 11
what is the probability of a value that is AT MOST 70
Round your answer to the nearest ten thousandth
3.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Find the z-score
x = 36 μ= 42 σ = 5
0.74
1.2
-1.2
1.03
4.
FILL IN THE BLANK QUESTION
1 min • 5 pts
Find the z-score
x = 19 μ= 14 σ = 2.1
Type in your answer to the nearest hundredth
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
If the mean is 100 and the standard deviation is 5
What is the probability of having a value between 72 & 102?
0.3448
0.6554
0.0854
0.7132
6.
FILL IN THE BLANK QUESTION
1 min • 5 pts
If the mean if 100 and the standard deviation is 5
What is the probability of a value that is AT LEAST 95.
Type your answer to the nearest ten thousandth place
7.
FILL IN THE BLANK QUESTION
1 min • 5 pts
What is the probability of a score between 44 & 59?
Type your answer to the nearest ten-thousandth
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