Statistics Sample Mean
Authored by Barbara White
Mathematics
10th Grade - University
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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
These symbols represent the mean and standard deviation for which of the following distributions?
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
These symbols represent the mean and standard deviation for which of the following distributions?
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
These symbols represent the mean and standard deviation for which of the following distributions?
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The mean and standard deviation of a population are 200 and 20, respectively. Sample size is 25.
What is the mean of the sampling distribution?
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The mean and standard deviation of a population are 200 and 20, respectively. Sample size is 25.
What is the standard deviation of the sampling distribution?
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The average cost for a gallon of gasoline is $2.51 (source AAA.org) with a standard deviation of $0.42. These prices are strongly right-skewed. What is the shape of the sampling distribution if n = 49?
Strongly Right Skewed
Approximately Normal
Roughly Uniform
Strongly left skewed
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
The mean weight of potato chip bags is 10.5 ounces with a standard deviation of 3 ounces. A random sample of 40 bags of potato chips is selected. What is the probability that the mean of the sample is less than 10 ounces?
P = -1.05
P = .146
P = .020
P = .853
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