Exam 8: Analyzing Data: Comparing Means

For each of the following hypotheses, decide which statistic should be used: -There is no difference in yearly salary among four regions of the country (east, west, south, and north). _________

When comparing the scores on a satisfaction scale for a group of workers before and after new salaries were provided, it is best to test the difference in mean satisfaction scores using

What statistics would be most useful to test whether you reject or accept the null hypothesis? -there is no relationship between political party membership (Democrat, Republican, etc.) and residence location (rural, suburban, urban). _____

Explain "confidence interval."

What statistics would be most useful to test whether you reject or accept the null hypothesis? -there is no relationship between age and anomie (scored on a scale with items from an anomie scale) ________

A survey about classical musical tastes measures liking or disliking using a 10 point scale where a 10 = likes very much. Here are the findings: College graduates mean = 5.7 Non college-grads mean = 4.1 t value = 12.2, p < .001 -Why is a t-test being used here?

What statistics would be most useful to test whether you reject or accept the null hypothesis? -there is no difference in SAT scores among students in different majors ________

What statistics would be most useful to test whether you reject or accept the null hypothesis? -there is no relationship between level of job satisfaction (very satisfied to very unsatisfied) and educational level (high school, college, graduate/professional) _______

For each of the following hypotheses, decide which statistic should be used: -There is a difference in scores on a satisfaction scale between salaried and hourly employees. _________

A survey about classical musical tastes measures liking or disliking using a 10 point scale where a 10 = likes very much. Here are the findings: College graduates mean = 5.7 Non college-grads mean = 4.1 t value = 12.2, p < .001 -What do you tell the general public you have discovered?

For each of the following hypotheses, decide which statistic should be used: -There is no relationship between mean number of children and religion practiced. __________

What statistics would be most useful to test whether you reject or accept the null hypothesis? -there is no difference in spending habits (money spent) between teenage boys and teenage girls _______

A survey about classical musical tastes measures liking or disliking using a 10 point scale where a 10 = likes very much. Here are the findings: College graduates mean = 5.7 Non college-grads mean = 4.1 t value = 12.2, p < .001 -Interpret what you are finding for fellow statistical experts.

What statistics would be most useful to test whether you reject or accept the null hypothesis? -subjects are asked their height and then actually measured: there is no difference in self-reported height and measured height. ________