unit 3 exam statistics

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6 Terms

1
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when the number of degrees of freedom is large…

the student's t distribution is close to the normal distribution

2
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if the confidence level increases and sample size stays the same…

the margin of error increases

3
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if the sample size increases and confidence stays the same…

the margin of error decreases

4
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as the significance level gets smaller

the stronger the evidence needed

5
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what happens to the standard deviation of a sampling distribution as the sample size increases

the SD decreases

6
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as the sample size decreases…

the confidence interval becomes wider