A researcher wants to see if there are generated difference

A researcher wants to see if there are generated difference in the ability to detect whether someone is being deceptive or not. Twenty-five females and 25 males college students were recruited to participate in the experiment. All participants were asked to view 20 video clips of someone talking about what they did the day before. Participants were to decide for each clip whether the person way lying or not. The dependent variable was the number of correct responses. Each participant had a score between 0 and 20. What test statistic would the researcher use to analyze this data set? A psychologist is interested in seeing what type of therapy works best for treating depression. Eighty people who had been diagnosed as being clinically depressed were randomly assigned to one of four conditions: drug therapy, cognitive therapy, group therapy, or placebo control. After one month, scores on the Beck Depression Inventory were obtained for each subject (scores range from 10 to 50). What test statistic would the psychologist use to analyze this data set? A researcher wants to see if school start time and gender has an impact on the amount of sleep high school students get each night. The researcher administers a sleep survey to students in four high schools with different school start times

Solution

answer of (7.)

here we go for chi-squre of independence.

in this question our null hypothis will be

Ho:there is no gender diffence

and

alternative hypothesis Ha:there is gender diffence

answer of (8)

Here we go for one way anova in which we test means of more than two samples.