Answer Happy

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 p = 28 ml/kg Red Blood cell volume that is to worth can Suppose that Roger has had seven blood tests, and the red blood cell volumes were as follows. MY NOTES ASK YOUR TEACHER DV PRACTICE ANOTHER 0 31 26 42 35 32 3628 Let x be a random variable that represents Roger's red blood cell volume. Assume that x has a normal distribution and o = 4.75. Do the data indicate that Roger's red blood cell volume sert the way of significance. (a) What is the level of significance? 0.01 State the null and alternate hypotheses. Will you use a left-tailed, right-tailed, or two-tailed test? O Ho: u = 28 ml/kg; H: H <28 ml/kg; left-tailed Hou = 28 ml/kg; H: 28 ml/kg; two-tailed O Ho: H+ 28 ml/kg; H: = 28 ml/kg; two-tailed O Ho: r = 28 ml/kg: H: > 28 ml/kg; right-tailed (b) What sampling distribution will you se? Explain the rationale for your choice of sampling distribution. The standard normal, since we assume that x has a normal distribution with known o. O The standard normal, since we assume that x has a normal distribution with unknown o. O The Student's t, since n is large with unknown o. The Student's t, since we assume that x has a normal distribution with known o Compute the z value of the sample test statistic. (Round your answer to two decimal places.) -2.79 (C) Find (or estimate) the p-value. (Round your answer to four decimal places.) 3 Sketch the sampling distribution and show the area corresponding to the p-value.