Ch. 9 Test - Student t-Test

A researcher examines the medical records of 89 critically ill patients with myxedema coma. He wishes to determine if they respond faster to the administration of vasopressor A or vasopressor B. They measure outcome as the average number of minutes to a stable blood pressure. What would be an appropriate test to apply in the scenario? T-test for independent samples Chi-square ANOVA T-test for dependent samples

T-test for independent samples

A study involving 1,498 elderly women examines if there is a relationship between urinary incontinence (present/not) and creatinine levels (mg/dL). An appropriate statistical test would be: T-test for independent samples Chi-square ANOVA T-test for dependent samples

T-test for independent samples

If your study is designed to determine if giving corticosteroids increases the average blood glucose level the researcher may conduct: A t-test for dependent samples A two tailed t-test A one tailed t-test Chi-square

A one tailed t-test

If you are willing to have a 10% chance of a type I error you should select: A power of 10% A power of 90% An alpha of 0.05 An alpha of 0.10

An alpha of 0.10

What test is used to find a relationship or difference in an outcome or dependent variable measured at the nominal or ordinal level? Repeat Measures ANOVA Chi-Square T-Test ANOVA

Chi-Square

To determine id the student t-test is appropriate to use you should first be certain your independent variable is measured at the nominal or ordinal. True False

False

A doctor at Lakeside is conducting a study and plans on using the t-test. What level of measure should the output variable be in order to use the t-test? Nominal Ordinal Interval or Ratio None of the above

Interval or Ratio

For an independent t-test to be appropriate, you must meet the following criteria except: Outcome variable at interval/ratio level Two samples Samples random and independent from one another One dependent and one independent sample

One dependent and one independent sample

A research nurse at Lakeside Hospital is about to begin a study that will have a dependent variable that is at the interval level. The study will compare two samples. Which test should she use? Chi-Square Repeat measures ANOVA Fisher's Exact Test T-test

T-test