what is the test statistic and what is the critical value

A researcher would like to determine if the proportion of Heath Insurance households without health insurance coverage differs with Household Income Yes No household income. Suppose the following data were collected Less than $25,000 50 22 from 700 randomly selected households. Complete parts a $25,000 to $49,999 144 42 through c. $50,000 to $74,999 203 36 $75,000 or more 171 32 . . . a. Using a = 0.01, perform a chi-square test to determine if the proportion of households without health insurance differs by income bracket. Choose the correct null and alternative hypotheses below. A. Ho: P1 = P2 = P3 = P4 O B. Ho: Not all p's are equal Hy : Not all p's are equal H1 : P1 = P2 = P3 = P4 O C. Ho: P1 = P2 = P3 = P4 OD. Ho: P1 # P2 # P3 # P4 H1 : P1 # P2 * P3 # P4 H1 : P1 = P2 = P3 = P4 What is the test statistic? x2 = (Round to two decimal places as needed.)