
sampling distribution
Authored by Cheyney Crook
Mathematics
12th Grade
6 Questions
CCSS covered

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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
According to a television commercial, 3 out of 4 dentists recommend Trident gum for patients who have dental work. A consumer magazine has surveyed 100 dentists to see if this claim is true.
Which is closest to the probability that between 70 and 74 percent of the dentists recommend Trident?
.9238
.2846
-.2846
.0762
Tags
CCSS.HSS.ID.A.4
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
A sampling distribution for proportions is guaranteed to be normal if ...
n ≥ 30
the population is normal
either np or n(1-p) is ≥ 30
np and n(1-p) are both ≥ 10
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to the Center for Disease Control, 93% of children entering kindergarten in the U.S. are vaccinated. A school district has 180 incoming kindergarten children.
Which of the following is true concerning the shape of the sampling distribution?
The sampling distribution is normal because n > 30
The sampling distribution is not normal because nq is < 30
The sampling distribution is normal because 10% of 180 is > 10
The sampling distribution is normal because np and nq are both > 10
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A realtor has been told that 43% of homeowners in a city prefer to have a finished basement. She surveys a group of 300 homeowners randomly chosen from her client list. Describe the sampling distribution model of the proportion of homeowners in this sample who prefer a finished basement.
mean = 43%; standard deviation = 1.4%
mean = 57%; standard deviation = 2.9%
mean = 57%; standard deviation = 1.4%
mean = 43%; standard deviation = 2.9%
There is not enough information to describe the distribution.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A distribution showing the sample means of all sample of size n of a population is called
Tags
CCSS.6.SP.A.3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The mean of the sampling distribution is the same as the mean of the population.
True
False
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