Suppose you wanted to test whether there was any difference between the average age of husbands and the average age of wives. You collected the age information of a random sample of 200 married men and a random sample of 200 married women. Which of the following statistical methods should you use? A two-sample t test A paired t test Linear regression An F test
Suppose you wanted to test whether there was any difference between the average age of husbands and the average age of wives. You collected the age information of a random sample of 200 married men and a random sample of 200 married women. Which of the following statistical methods should you use? A two-sample t test A paired t test Linear regression An F test
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 23PFA
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Which of the following statistical methods should you use. Question is at top of page
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Suppose you wanted to test whether there was any difference between the average age of husbands and the average age of wives. You collected the age information of a
random sample of 200 married men and a random sample of 200 married women. Which of the following statistical methods should you use?
two-sample t test
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A paired t test
Linear regression
An F test
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We constructed a 95% confidence interval for a population mean. Which of the following would cause the confidence interval to become wider? Please select all that apply.
Keep constant the sample mean, the sample standard deviation, and the sample size; increase the confidence level to 99%.
Keep constant the sample mean, the sample standard deviation, and the sample size; decrease the confidence level to 90%.
Keep constant the confidence level, the sample mean, and the sample standard deviation; increase the sample size.
Keep constant the confidence level, the sample standard deviation, and the sample size; increase the sample mean.
Keep constant the confidence level, the sample mean, and the sample size; increase the sample standard deviation.
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team ran two studies. In each study, measurements were collected for three treatment groups. If we were to run an ANOVA for the data in Study A and another
ANOVA for the data in Study B, how will their test statistic values compare?
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