AP Stats Chapter 11

Quiz
•
Mathematics
•
11th Grade
•
Hard
Anthony Clark
FREE Resource
14 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The number of absences during fall semester was recorded for each student in a large elementary school. The distribution of absences is displayed in the following cumulative relative frequency graph. What is the IQR for the distribution of absences?
1
2
3
5
1
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
About what proportion of the cockroaches will have weights greater than 83 grams?
0.0228
0.0668
0.1587
0.9332
0.0772
3.
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
4.
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
5.
FILL IN THE BLANK QUESTION
1 min • 5 pts
With a mean of 70 and standard deviation of 7,
what percentage of values fall between 56 and 84?
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Two measures of center are marked on the density curve shown. Which of the following is correct?
The median is at the yellow line and the mean is at the red line.
The median is at the red line and the mean is at the yellow line.
The mode is at the red line and the median is at the yellow line.
The mode is at the yellow line and the median is at the red line.
.
The mode is at the red line and the mean is at the yellow line.
7.
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
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