THE ANSWER IS NOT 0.98 or 0.978. Do not answer the question if that is what you got because it is wrong. Thank you

Click to see additional instructions Your research group has been hired to study student satisfaction with the dining halls at illinois State University and your group has determined that 90% of female students are satisfied with their dining services while 85% of male students are satisfied with their the dining services. The sample size of females is 75 students and the sample size of males is 100 students for this study. Based on this information, your research group calculates the Z-score to be: 0.978