Finding Standard Deviation from a Sample

Quiz
•
Mathematics
•
12th Grade
•
Hard
Anthony Clark
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
These symbols represent the mean and standard deviation for which of the following distributions?
The Population
The Sample
The Sampling Distribution
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The Gallup Poll asked a random sample of 1785 adults whether they attended church during the past week. Let p-hat be the proportion of people in the sample who attended church. A newspaper report claims that 40% of all U.S. adults went to church last week. Suppose this claim is true.
Calculate the standard deviation of the sampling distribution.
0.0116
0.0117
0.0118
0.0119
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The Gallup Poll asked a random sample of 1785 adults whether they attended church during the past week. Let p-hat be the proportion of people in the sample who attended church. A newspaper report claims that 40% of all U.S. adults went to church last week. Suppose this claim is true.
Calculate the standard deviation of the sampling distribution. (Check to see if the 10% condition is met first)
0.0116
0.0117
0.0118
0.0119
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The mean age of a dinosaur fossil in a particular fossil bed is 85 million years. The standard deviation of the fossil ages from this bed is 2.5 million years. At least __________ of fossils in this bed are between 80 and 90 million years old.
75 %
88.89 %
2%
70%
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
In a population of five university students with GPAs of 2.5, 2.3, 1.7, 1.4, and 1.1, a sample of three students are considered. What would be the standard deviation of the resulting sampling distribution?
0.53
0.41
0.35
0.22
6.
MULTIPLE CHOICE QUESTION
1 min • 10 pts
What is the sample standard deviation for the data given:
5, 10, 7, 12, 0, 20, 15, 22, 8, 2
6.89
10.1
7.26
9
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the sample standard deviation for the data given: 5, 10, 7, 12, 0, 20, 15, 22, 8, 2. Round the mean to whole number.
6.89
10.1
7.26
9
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