Question: Multiple myeloma or blood plasma cancer is characterized by increased blood vessel formulation in the bone marrow that is a prognostic factor in survival. One treatment approach used for multiple myeloma is stem cell transplantation with the patient’s own stem cells. The data in the table below represent the bone marrow microvessel density for a sample of 7 patients who had a complete response to the stem cell transplant as measured by blood and urine tests. Two measurements were taken: the first immediately prior to the stem cell transplant, and the second at the time of the complete response.

1. Construct and interpret a 95% confidence interval estimate of the mean difference in bone marrow microvessel density before and after the stem cell transplant. Place your answer in the space below . (5pts)

b. Is there evidence that the mean bone marrow microvessel density is significantly different before the stem cell transplant than after the stem cell transplant? Justify and place your answer in the space below . (5pts)

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