Question

Please please help me!

Question Help A concrete mix is designed to withstand 3000 pounds per square inch (psi) of pressure. The following data represent the strength of nine randomly selected casts (in psi). 3970, 4090, 3100, 3000, 2940, 3830, 4090, 4050, 3780 2 Compute the mean, median and mode strength of the concrete (in psi). Compute the mean strength of the concrete. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The mean strength of the concrete is p si of pressure. (Round to the nearest tenth as needed.) O B. The mean does not exist. Compute the median strength of the concrete. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. psi of pressure. O A. The median strength of the concrete is (Round to the nearest tenth as needed.) OB. The median does not exist. Compute the mode strength of the concrete. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The mode of the strengths of the concrete is I Round to the nearest tenth ae noored psi of pressure. Click to select and enter your answer(s).

Answer 1

solution: - Arranged data :- 2940, 3000, 3100, 3780, 3830,3970, 4050, 4090, 4ogo 4ogo 3 28 50 n - 2940+ - . - - (a) Men = 2990 + . . . . 4990 = 328 50 A Mean - 3650 (b) Median = 5th Entry = 13830 (c) Mode = 4090 {maximum occurence 2} Maximum occurence