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The confidence coefficient for a 95% confidence interval is z = 1.645. Group of answer choices...

The confidence coefficient for a 95% confidence interval is z = 1.645.

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False

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Question 21 pts

When using the t-distribution to construct a confidence interval on the population mean, the degrees of freedom are n - 1.

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Question 31 pts

For n = 121, sample mean = 96 and a known population standard deviation σ = 14, construct a 95% confidence interval for the population mean.

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[93.53, 98.48]

[93.51, 98.49]

[93.02, 98.98]

[93.06, 98.94]

[93.00, 98.95]

Math   Statistics-And-Probability   
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