A concrete mix is designed to withstand 3000 pounds per square inch (psi) of pre

Question

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) Compute the mean, median and mode strength of the concrete (in pesi) Compute the mean strength of the concrete. Select the correct choice below and, if necessary, fill in the answer box to complete your chcice. O A. The mean strength of the concrete is psi of pressure. O B. The mean does not exist 3970, 4100, 3200, 3100, 2950, 3830, 4100, 4030, 3390 P Round to the nearest tenth as needed.)

Explanation / Answer

Ans:    Given data

Mean strength

=(3970+4100+3200+3100+2950+3830+4100+4030+3390)/9

= 32670/9

= 3630

The mean strength of the concrete is 3630 psi of pressure.

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