If the null hypothesis is true, what is the appropriate expected count for the age group 70-79? 0 22.617 Q 13.075 Q 25.513 Q 20.625 Q 15.649 Compute the Chi-Square test statistic. Hint: Round to three places past the decimal for the expected counts. People of all age groups can be infected by COVlD-19. Data were collected from laboratory confirmed COVlD-19 cases in Kalamazoo County (as of 3:00 PM April 19, 2020) and are presented below. We are interested in testing (at 5% level of significance) whether the percentage of at least one age group differs significantly from the others. Age Group Cases 0-19 8 20-29 24 30-39 30 40-49 27 50-59 19 60-69 20 70-79 14 >79 23 Total 165 People of all age groups can be infected by COVlD-19. Data were collected from laboratory confirmed COVlD-19 cases in Kalamazoo County (as of 3:00 PM April 19, 2020) and are presented below. We are interested in testing (at 5% level of significance) whether the percentage of at least one age group differs significantly from the others. Age Group Cases 0-19 8 20-29 24 30-39 30 40-49 27 50-59 19 60-69 20 70-79 14 >79 23 Total 165