standard divisor

There are 9 girls and 12 boys in the classroom. What percentage of the classroom are girls? A. 75%B. 133%C. 42.8%

Show work please

show work and why it might be negative if you get negative number please thank you

Please do not give solution in image format thanku

complaint and, if so, whether the complaint was medical or nonmedical in nature. After a year, a tally from these patients was collected to count number who left the HMO voluntarily. Here are the data on the total number in each group and the number who voluntarily left the HMO: No complaint Medical complaint Nonmedical complaint Total A certain health maintenance organization (HMO) wishes to study why patients leave the HMO. A SRS of 423 patients was taken. Data was collected on whether a patient had filed a 177 111 135 Left 64 27 50 If the null hypothesis is Ho : pı = P2 = P3 and using a = 0.05, then do the following: (a) Find the expected number of people with no complaint who leave the HMO: (b) Find the expected number of people with a medical complaint who leave the HMO: (c) Find the expected number of people with a nonmedical complaint who leave the HMO: (d) Find the test statistic: (e) Find the degrees of freedom: (f) Find the critical value: (g) The final conclusion is OA. We…

1) Use the given table to find the how many English questions a student is expected to answer incorrectly. Round to the nearest whole question. Correct Incorrect Math 27 53 English 43 37