Page 1 > of 4 1. Identify, which graphical displayand the statistical procedure that might be appropriate in each case. Investigate the percentage of smokers in your community Compare the GPA values between commuters and non-commuters--- Investigate the relationship between cholesterol level and age among females.' - ---.. Investigate the favorite type of fast food (hamburgers, tacos, and sandwiches) among high school students . Compare the percentage of people in favor of a tax cut among different age groups (youth, adult, and senior) 2. The table below gives the grade counts of an English exam. Count 85 90 79 78 68 a. .How many students have taken the English exam? State the the hypothesis that the proportions of al 5 grades, A, B, , C, D, and E are the same. c. If the Chi-squared Test statistic is 3.426 , can you conclude at 1% significance level that the grade proportions are the same