| Population Mean (σ known) | Population Mean (σ unknown) | Population Proportion | Population Standard Deviation and Variance | Mixed Review |
|---|---|---|---|---|
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What is 95% confident?
The critical value for this level of confidence is 1.96 when constructing a confidence interval for the population mean and σ is known.
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What is the t-distribution table?
This table is used to find the critical value for the population mean when σ is unknown?
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What is the normal distribution table?
This table is used to find the critical value for the population proportion.
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What is Chi-square distribution table?
This table is used to find the critical values for the population variance and standard deviation.
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The sample is a portion of the population.
What is the difference between a population and a sample?
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What is 2.05?
Find the critical value for a 96% confidence interval for the population mean, assuming σ is known.
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What is
Find the critical value for a 99% confidence interval for the population mean, assuming σ is unknown, when n = 17.
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What is
Find the critical value for a 92% confidence interval for the population proportion.
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What is
Find the left and right critical values for a 95% confidence interval for the population variance, when n = 17.
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A parameter describes the population and a statistic describes the sample.
What is the difference between a statistic and a parameter?
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What is critical value, μ, and n.
These are the three values you need to calculate the margin of error for the population mean when the population standard deviation is known.
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What is critical value, s, and n.
These are the three values you need to calculate the margin of error for the population mean when the population standard deviation is unknown
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What is the critical value, p-hat, q-hat, and n.
These are the four values you need to calculate the margin of error for the population proportion.
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What is the degrees of freedom, the sample variance, and the left and right critical values.
These are the four variables needed to construct the confidence intervals for population variance and standard deviation.
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The confidence interval gets wider.
What happens to the confidence interval as the confidence level gets higher?
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What is 0.49
A sample of size n = 100 produced the sample mean of x = 16. Assuming the population standard deviation σ = 3, determine the margin of error for a 90% confidence interval for the population mean.
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What is
A sample of size n = 101 produced the sample mean of x = 16. If the sample standard deviation s = 3, determine the margin of error for a 90% confidence interval for the population mean.
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What is
In a survey of 100 people, 56 said they like peperoni on their pizza. Determine the margin of error for a 90% confidence interval for the population proportion.
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What is
A sample size n = 20 produced the sample variance of 3. Construct a 90% confidence interval for the population variance.
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What is a point estimate?
This type of estimate is a single value and used to predict a population parameter.
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What is
A sample of size n = 48 produced the sample mean of x = 42. Assuming the population standard deviation σ = 5, construct a 98% confidence interval for the population mean.
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What is
A sample of size n = 28 produced the sample mean of x = 42. If the sample standard deviation s = 5, construct a 95% confidence interval for the population mean.
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What is
In a survey of 25 people, 10 said they don't like to listen to music while studying. Construct a 95% confidence interval for the population proportion.
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What is
A sample size n = 28 produced the sample standard deviation of 12. Construct a 95% confidence interval for the population standard deviation.
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What is an interval estimate?
This type of estimate is a range of values used to estimate a population parameter.
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