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...


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.















32244137293730


Let
x
be a random variable that represents Roger's red blood cell volume. Assume that
x
has 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) the
P-value. (Round your answer to four decimal places.)




Jun 01, 2022
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