Testing_for_Means 9.1-9.5

Why does one not divide by the true standard error

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Unformatted text preview: t Confidence Intervals and Hypothesis Testing for Population Hypothesis Testing for Population Means Hypothesis Testing for One Population Mean Comparing Two Means for Two Independent Populations Comparing Two Means for Two Dependent Populations Computing the t-statistics When computing the t-statistics, one divides by an estimate of the standard error. Why does one not divide by the true standard error? Choose the correct answer below. A. Because in real life one almost never knows the value of the population standard deviation B. Because in real life one almost never knows the value of the population mean C. Because this saves time and makes the calculation easier to do D. Because this gives one a more accurate value for the t-statistics. A. Confidence Intervals and Hypothesis Testing for Population Hypothesis Testing for Population Means Hypothesis Testing for One Population Mean Comparing Two Means for Two Independent Populations Comparing Two Means for Two Dependent Populations Computing the t-statistics When computing the t-statistics, one divides by an estimate of the standard error. Why does one not divide by the true standard error? Choose the correct answer below. A. Because in real life one almost never knows the value of the population standard deviation B. Because in real life one almost never knows the value of the population mean C. Because this saves time and makes the calculation easier to do D. Because this gives one a more accurate value for the t-statistics. A. Confidence Intervals and Hypothesis Testing for Population Hypothesis Testing for Population Means Hypothesis Testing for One Population Mean Comparing Two Means for Two Independent Populations Comparing Two Means for Two Dependent Populations Degrees of Freedom In the t-distribution, the degrees of freedom are related to which of the following? A. The sample standard deviation B. The sample mean C. The sample size D. All of the above C. Confidence Intervals and Hypothesis Testing for Population Hypoth...
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This test prep was uploaded on 03/12/2014 for the course STATS 10 taught by Professor Ioudina during the Spring '08 term at UCLA.

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