As part of a program to reduce smoking a national organizati

As part of a program to reduce smoking, a national organization ran an advertising campaign to convince people to quit smoking. To evaluate the effectiveness of their campaign, they had 15 participants record the average number of cigarettes smoked per day in the week before and the week after exposure to the advertisement. What test statistic should they use to analyze this data set? In a study examining the relationship between temperature and violent aggression, Anderson and Anderson (1984) recorded the temperature and the number of murders a rapes per day in a major southwestern city. What test statistic should they use to analyze this interval data set? The admissions staff at Utopia College would like to predict incoming students\' GPAs at their college based on the students\' ACT scores. The staff used past students\' ACT score and GPAs to help them with the prediction. What procedure would the staff use to makes the prediction?

Solution

(a): Here we have to find the average number of cigarettes smoked per day in the before week and after week basing on advertisement. So we have to use two-way ANOVA. (b):Here we use Pearson\'s correlation test, because the number of murders are based upon temperature. (c):Here we spearman\'s rank correlation , because the data is given in scores i.e.,ranks.