Sampling Distributions for Proportions
Quiz
•
Mathematics
•
12th Grade
•
Practice Problem
•
Hard
Standards-aligned
Anthony Clark
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Suppose we have a population that is 49% male. If we take a random sample from that population and determine the percent of our sample that is male, we refer to this proportion as...
p
p-hat
the sample mean
the sampling distribution
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A sample is taken of 200 people. The number of people who own a dog was 80.
What is the sample proportion?
80
0.8
0.4
35%
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
30% of all dogs in a city are micro-chipped. In a sample of 500 dogs, what is the probability that less than 140 dogs are micro-chipped? Select the closest option.
0.25
0.21
0.17
0.13
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
According to government data, 22 percent of children in the United States under the age of 6 years live in households with incomes that are classified at a particular income level. A simple random sample of 300 children in the United States under the age of 6 years was selected for a study of learning in early childhood. If the government data are correct, which of the following best approximates the probability that at least 27 percent of the children in the sample live in households that are classified at the particular income level? (Note: z represents a standard normal random variable.)
5.
FILL IN THE BLANK QUESTION
1 min • 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.
The mean of the sampling distribution (for proportions of vaccinated children) would be _____.
6.
FILL IN THE BLANK QUESTION
1 min • 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.
The standard deviation of the sampling distribution (for proportions of vaccinated children) would be _____.
(Round answers to three or four decimal places.)
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
According to the Center for Disease Control, 93% of children entering kindergarten in the U.S. are vaccinated. Find the z-score associated with a sample of 180 children in which 162 have been vaccinated.
-1.34
1.34
.0901
.9099
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