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Margin of error
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Questions (83)
A scientist in Smallville tested the cholesterol of a random sample of 35 town residents. He constructed the following
2 answers
asked by
Katelyn
515 views
Your friend David works for an online magazine and calls you late one night. He says “Dude(tte), can you help me out? I’m
1 answer
asked by
Karen
479 views
assume that a sample is used to estimate a population proportion p. find the margin of error E that corresponds to the given
1 answer
asked by
daniel
479 views
Assume that a sample is used to estimate a population proportion p. Find the margin of error. 95% confidence; n = 250, x = 130
1 answer
asked by
Chris
473 views
8) In the following statement, which is the margin of error?
200 Americans were asked which subject they think about most. 65%
4 answers
asked by
Anonymous
438 views
Determine Confidence Interval or Margin of Error
12. A study was commissioned to find the mean weight of the residents in certain
1 answer
asked anonymously
43 views
16. A news show displays the results of a poll for a two-candidate runoff election between candidate A and candidate B. The poll
1 answer
asked anonymously
61 views
We have the survey data on the body mass index (BMI) of 648 young women. The mean BMI in the sample was x¯=27.2. We treated
1 answer
asked by
Mike
474 views
Assume that a sample is used to estimate a population proportion p. Find the margin of error M.E. that corresponds to a sample
1 answer
asked anonymously
37 views
In a recent poll, 580 people were asked if they liked dogs, and 76% said they did. Find the margin of error of this poll, at the
1 answer
asked anonymously
47 views
In a recent poll, 260 people were asked if they liked dogs, and 8% said they did. Find the margin of error of this poll, at the
1 answer
asked anonymously
53 views
You measure 30 turtles' weights, and find they have a mean weight of 76 ounces. Assume the population standard deviation is 14.7
1 answer
asked anonymously
38 views
In a film study, a sample of 300movies was found to have an average runtime of 116minutes with a standard deviation of
1 answer
asked by
Dr doof
31 views
In a sleep study, the average number of hours of sleep 600 people reported getting the previous night was 5.75 with a standard
1 answer
asked by
Dr doof
64 views
Suppose a real estate agent wants to understand home pricing in his region more clearly using a random sample. Which sample
1 answer
asked by
Dr doof
63 views
As the confidence level for a margin of error increases, what happens to the margin of error itself?
A) The margin of error stays
1 answer
asked by
Dr doof
55 views
What is the range of margin of error
1 answer
asked by
Elick
6 views
Suppose the margin of error is 5%. What does this imply
1 answer
asked by
Elick
5 views
Assume that a sample is used to estimate a population mean μ. Use the given confidence level and sample data to find the margin
1 answer
asked anonymously
20 views
A simple random sample of size 15 is drawn from a normal population whose standard deviation is assumed to be 8. What's the
1 answer
asked anonymously
12 views
A 90% confidence interval for a proportion is found to be (0.60, 0.68). What is the margin of error?
A. 0.03 B. 0.06 C. 0.02 D.
1 answer
asked anonymously
4 views
A doctor would like to know what proportion of their patients are vitamin D deficient. They choose a random sample of 30
1 answer
asked anonymously
3 views
A doctor would like to know what proportion of their patients are vitamin D deficient. They choose a random sample of
3 0
3 answers
asked anonymously
6 views
A survey was taken of 850 people in a neighborhood, and the results were that 230 people were planning on voting for a
3 answers
asked anonymously
5 views
If the 99% confidence interval is given by (0.40,0.52) , which of the following correctly interprets the margin of error?(1
1 answer
asked anonymously
1 view
Question What is the margin of error if the sample size is 120? Write your answer as a percentage rounded to the nearest whole
1 answer
asked anonymously
3 views
By how many times does the sample size have to be increased to decrease the margin of error by 2 times?(1 point)
1 answer
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3 views
Explore the inverse relationship between sample size and margin of error and answer the question: Which of the following is the
1 answer
asked anonymously
3 views
A doctor would like to know what proportion of their patients are vitamin D deficient. They choose a random sample of 30
1 answer
asked anonymously
2 views
Which of the following correctly calculates the margin of error with a confidence level of 95% for estimating a proportion of
1 answer
asked anonymously
2 views
A survey of 650 people reported that 32% favored the reelection of the current mayor. Which of the following correctly
1 answer
asked anonymously
2 views
What is the margin of error if the sample size is 120? Write your answer as a percentage rounded to the nearest whole number.(1
1 answer
asked anonymously
2 views
Explore the inverse relationship between sample size and margin of error and answer the question: Which of the following is the
1 answer
asked anonymously
2 views
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Parent Categories (17)
Confidence Interval
Confidence intervals
Data Analysis
Estimation
Hypothesis Testing
Inferential Statistics
Opinion poll
Polling
Sample size calculation
Sampling
Sampling and Confidence Intervals
Sampling and Data Analysis
Sampling and Estimation
Statistics
Survey analysis
Survey methods
Surveys and Sampling