our twenty observations of Dr. Knowitall reveal the following information. Assume that the estimate is to be within 9 percent of the true proportion 90 percent of the time.   Activity Observed Number of Times Observed With patient 4 Reviewing test results 3 On phone 6 Idle 3 Away on emergency 1 Not available 5 Total 22 Calculate the sample size needed to estimate the proportion of time Dr. Knowitall spends away on emergencies. (Round your answer to the whole number, the tolerance is +/-1.) Sample size needed is 15 Calculate the sample size needed to estimate the proportion of time Dr. Knowitall spends reviewing test results. (Round your answer to the whole number, the tolerance is +/-1.) Sample size needed is enter a sample size .

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