Determine the standardized score (z-score) for a value of 48 where the average was 65 and standard deviation was 2.9
Big AP Stats Review

Quiz
•
Mathematics
•
12th Grade
•
Hard
Anthony Clark
FREE Resource
14 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
-5.86
.586
5.86
1.00
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Given the probability model in the table below, what is the expected value of the random variable?
X 50 20 5
P(X) 0.1 0.3 0.6
14
4.67
5
7.5
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Identify the sampling method:
Every fifth person boarding a plane is searched thoroughly.
SRS
Stratified
Cluster
Systematic
Voluntary Response
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The following scatterplot describes the relationship between height (in cm) and foot length (also in cm) for 12 randomly selected students from the British Census @ Schools database. Which of the following is the best description of this relationship?
There is some random variation, but otherwise height is directly proportional to foot length.
There is a roughly linear relationship between height and foot length.
There is a moderately weak, positive linear relationship between height and foot length.
The relationship between height and foot length is linear, positive, and very strong.
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A friend has placed a large number of plastic disks in a hat and invited you to select one at random. He informs you that half are red and half are blue. If you draw a disk, record the color, replace it, and repeat 100 times, which of the following is true?
It is unlikely you will choose red more than 50 times.
If you draw 10 blue disks in a row, it is more likely you will draw a red on the next try.
The overall proportion of red disks drawn should be close to 0.50.
The chance that the 100th draw will be red depends on the results of the first 99 draws.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A dealer in Las Vegas selects 10 cards from a standard deck of 52 cards. Let Y be the number of diamonds in the 10 cards selected. Which of the following best describes this setting?
Y has a binomial distribution with n = 10 observations and probability of success p = 0.25.
Y has a binomial distribution with n = 10 observations and probability of success p = 0.25, provided the deck is shuffled well.
Y is a binomial distribution with n = 10 observations and probability of success p = 0.25, provided that after selecting a card it is replaced in the deck and the deck is shuffled well before the next card is selected.
Y has a geometric distribution with n = 10 observations and probability of success p = 0.25
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Le the random variable X represent the amount of money Carl makes tutoring statistics students in the summer. Assume that X is Normal with mean $240 and standard deviation $60. The probability is approximately 0.6 that, in a randomly selected summer, Carl will make less than about
$144
$216
$255
$30
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