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 μ = 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.
Letxbe a random variable that represents Roger's red blood cell volume. Assume thatxhas a normal distribution and σ = 4.75. Do the data indicate that Roger's red blood cell volume is different (either way) from μ = 28 ml/kg? Use a 0.01 level of significance.
What is the level of significance?
What is the value of the sample test statistic? (Round your answer to two decimal places.)
Find (or estimate) theP-value. (Round your answer to four decimal places.)
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