Question

Cushing's disease is characterized by muscular weakness due to adrenal or pituitary dysfunction. To provide effective treatment, it is important to detect childhood Cushing's disease as early as possible. Age at onset of symptoms and age at diagnosis (months) for 15 children suffering from the disease were given in an article. Here are the values of the differences between age at onset of symptoms and age at diagnosis. −70 −33 −44 −27 −35 −52 −15 −23 −62 −8 −80 −8 −58 −48 −19

(b) Calculate a lower 95% confidence bound for the population mean difference. (Use age at onset of symptoms − age at diagnosis. Round your answer to two decimal places.) months

(c) Suppose the (age at diagnosis) − (age at onset) differences had been calculated. What would be a 95% upper confidence bound for the corresponding population mean difference? (Round your answer to two decimal places.) months

Answer 1

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