MGQ 301-Suppose a hospital would like to estimate

Suppose a hospital would like to estimate the proportion of patients who feel that physicians who care for them always communicated effectively when discussing their medical care. A pilot sample of 50 patients found that28reported that their physician communicated effectively. Determine the additional number of patients that need to be sampled to construct a90%confidence interval with a margin of error equal to6%to estimate this proportion.The additional number of patients that need to be sampled is (Round up to the nearest integer.)(we use the EXCEL )

 

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