Using the information in Table 3.14, determine the optimal allocation (a) sampling proportions for estimating the proportion

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Using the information in Table 3.14, determine the optimal allocation

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(a) sampling proportions for estimating the proportion of doctors who work at least 30 hours per week.

(b) sample size for a stratified random sample selected using optimal allocation that produces the smallest cost for a bound on the error of estimation of ???? = 0.035.

(c) strata sample sizes.

(d) the cost of sampling when the initial cost of sampling is ????0 = $2500.

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