poll showed that 48 out of 120 randomly chosen graduates of California medical schools last year intended to specialize in family practice

A poll showed that 48 out of 120 randomly chosen graduates of California medical schools last year intended to specialize in family practice. What is the width of a 90% confidence interval for the proportion that plan to specialize in family practice?

A)  .04472

B)  .07357

C)  .08765

D)  .08944

RES / 341 RES/341 RES341 RES 341 QUIZ # 3

(Chapters 2+8 from Applied Statistics in Business and Economics )

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