please solve, I'm timed

At least one of the answers above is NOT correct. (1 point) Complete the table below. You may enter fractions as answers in the relative frequency column. Round your answers to 4 decimal places. Books read within the past year Frequency Relative Frequency none 3 0-4 4 5-9 19 10-14 15 0.2542 15-19 15 0.2542 20-25 3 Total 59(1 point) Determine whether the follow descriptions correspond to an observational study or an experimental study. Write "EXPERIMENTAL" for experimental study and "OBSERVATIONAL" for observational study (without quotations). Avoid MISSPELLING errors by copying and pasting the words above as they are!!!) (a) A new antibiotic is tested in effectiveness by recording how the drug works on two groups of patients, one that receives a dummy drug and the other that receives the real drug. answer: (b) A study on use of sunscreen included 400 men and women who already had some form of skin cancer. answer: (c) Studying how patients respond when given a placebo