Find the critical z-score value for each of the following confidence levels. Give each answer to...

Find the critical z-score value for each of the following confidence levels. Give each answer to at least three decimal places.

The z-critical value for a 95% confidence level is:
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The z-critical value for an 80% confidence level is:
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The z-critical value for a 99% confidence level is:
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The z-critical value for a 92% confidence level is:
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The z-critical value for a 75% confidence level is:
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The z-critical value for an 85% confidence level is:

To construct a confidence interval for a population mean when the population standard deviation is unknown, find the critical t-score value for each of the following confidence levels, assuming a sample size of 12. Give each answer to at least three decimal places.

The t-critical value for a 99% confidence level is:
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Equation Editor
The t-critical value for a 95% confidence level is:
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The t-critical value for a 90% confidence level is:
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The t-critical value for a 98% confidence level is:
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The t-critical value for a 92% confidence level is:

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Expert Solution

orchestra answered 1 year ago

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