Power_exercises

# Power_exercises - March 8 2010 1 Read each of the following...

This preview shows pages 1–2. Sign up to view the full content.

March 8, 2010 1) Read each of the following statements and indicate if it is true (T) or false (F). a------A type II error occurs when you fail to reject a false null hypothesis. b------If the null hypothesis s in fact true, alpha is the probability that we will incorrectly reject it. c------alpha is the probability that the null hypothesis is wrong. d------A type I error occurs when you reject the null hypothesis when in fact it is true e------A type II error occurs when you accept the null hypothesis when the alternative hypothesis is true. f------As sample size increases, the standard error of the mean increases. g------Beta refers to the probability that we fail to reject the null hypothesis when in fact the null hypothesis is true. h-----power=1-alpha i----As significance level is reduced from .05 to .01, power decreases. j--- You want to maximize the power of your statistical test. This means that you wish to avoid making a type I error. k----You wish to avoid making a type II error. Therefore alpha should be .01

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.
• Winter '10
• AfroditiPanagopoulos
• Null hypothesis, d., Statistical hypothesis testing, Type I and type II errors, Statistical power, c.

{[ snackBarMessage ]}

### Page1 / 2

Power_exercises - March 8 2010 1 Read each of the following...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online