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).

3950, 4090, 3100, 3200, 2950, 3840, 4090, 4040, 3410

Compute the mean strength of the concrete. Select the correct choice below and, if necessary, fill in the answer box to complete your choice.

A.The mean strength of the concrete is ______psi of pressure.

(Round to the nearest tenth as needed.)

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.

A.The median strength of the concrete is ______psi of pressure.

(Round to the nearest tenth as needed.)

B.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.

A. The mode of the strengths of the concrete is _____psi of pressure.

(Round to the nearest tenth as needed.)

B. The mode does not exist.