Total blood volume (in ml) per body weight (in kg) is Important in medical research. For healthy adults, the red blood cell volume mean is about fe = 28 ml/kg.+ Red blood cell volume that Is too low or too high can indicate a medical problem. Suppose that Roger has had seven blood tests, and the red blood cell volumes were as follows.

34,27,42,35,29,38,28

Compute the z value of the sample test statistic. (Round your answer to two decimal places.)


Find.(or estimate) the P-value. (Round your answer to four decimal places.)