SOLUTION: A researcher predicts that watching a film on institutionalization will change students� attitudes about chronically mentally ill patients. The researcher randomly selects a class

Question 582881: A researcher predicts that watching a film on institutionalization will change students� attitudes about chronically mentally ill patients. The researcher randomly selects a class of 36 students, shows them the film, and gives them a questionnaire about their attitudes. The mean score on the questionnaire for these 36 students is 70. The score for a similar class of students who did not see the film is 75. The standard deviation is 12. Using the five steps of hypothesis testing and the 5% significance level (i.e. alpha = .05), does showing the film change students� attitudes towards the chronically mentally ill?
What does it mean to set alpha at .05?
What is your null hypothesis? Alternate hypothesis?
Is this a one-tailed or two-tailed hypothesis?
What is your obtained z?
What is the critical value of z?
Do you reject or fail to reject the null hypothesis? State in words what you have found.
Answer by rockinghamalisa(1) (Show Source): You can put this solution on YOUR website!

RELATED QUESTIONS
A researcher predicts that watching film on institutionalization will change... (answered by Boreal)

This is my problem below. I do not understand much of anything that is going on. At... (answered by rothauserc)

The time spent watching tv on a weekend by USC students is normally distributed with a (answered by stanbon)

Test the indicated claim about the means of two populations and find confidence interval. (answered by Boreal)

A researcher predicts that listening to music while solving math problems will make a... (answered by stanbon)

18. A researcher predicts that listening to music while solving math problems will make a (answered by stanbon)

A researcher predicts that listening to music while solving math problems will make a... (answered by stanbon)