Choose the letter of the correct answer. Show your solutions.

ites Choose the letter of the correct answer. Write the chosen answer using capital letter ON A SEPARATE SHEET OF YELLOW PAPER. Show your solution on the number that needs computation (each number, 1 point). 1. What mathematical operation will be used to get the area under the normal curve if the two z-values are found to the left of the mean? A. add B. divide C. multiply D. subtract 2. What is the area between z=0.23 and z=199? A. 0.3857 B. 0.3888 C. 0.8239 D. 0.8583 3. Find the area above z=2.14. A. 0.0520 B. 0.0162 C. 0.0324 D. 0.9838 4. Find the area of the shaded region of the given figure. A. 0.1587 B. 0.3413 C. 0.3907 D. 0.8413 5. Suppose the provincial health officer of Cavite reported that the average COVID-19 positive for 40 days is 10 patients with the standard deviation of 6 patients. What is the z- score of 18 patients? A. 1.31 B. 1.32 C. 1.33 D. 1.34 6. If, in number 5, the given becomes 4 patients (instead of 18), what will be the z-score? A. - 1.50 B. - 1.0 C. - 0.50 D. 0.00 7. If Ana's z-score on a quiz is - 3, the mean is 10 and the standard deviation is 2, what is the raw score? A. 20 B. 16 C. 12 D. 4 8. What is the probability of z value indicated by P(Z > - 1.78)? A. 0.9625 B. 0.6925 C. 0.0375 D. 0.0367 9. Find the percentile value of P(Z