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Increased blood vessel formulation is a predictive factor in survival for a certain disease. One treatment is stem cell transplantation with the? patient's own stem

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Increased blood vessel formulation is a predictive factor in survival for a certain disease. One treatment is stem cell transplantation with the? patient's own stem cells. The accompanying data table represents the microvessel density for patients who had a complete response to the stem cell transplant. The measurements were taken immediately prior to the stem cell transplant and at the time the complete response was determined. Complete parts? (a) through? (d) below.

a.

At the 0.10 level of? significance, is there evidence that the mean microvessel density is higher before the stem cell transplant than after the stem cell?transplant?

Let ?1 be the mean density before the transplant and let ?2 be the mean density after the transplant. State the null and alternative hypotheses. Choose the correct answer below.

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\fa. At the 0.10 level of significance, is there evidence that the mean microvessel density is higher before the stem cell transplant than after the stem cell transplant? Let py be the mean density before the transplant and let u2 be the mean density after the transplant. State the null and alternative hypotheses. Choose the correct answer below. O A. Ho: HD >0 (where HD = M1 - 12) O B. Ho: HD 20 (where HD = My - H2) Hy : HD SO Hy : HD 0

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