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5 October, 16:24

It has been reported that 40% of u. s. workers employed as purchasing managers are females. in a simple random sample of u. s. purchasing managers, 70 out of the 200 are females. given this information:

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  1. 5 October, 16:45
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    a. What is the population proportion,? Ď€ 40 = U. S. worker employed as purchasing managers are females 70 females n = 200 40% is the population proportion. b. What is the sample proportion, p? 70 0.35 P = 0.35 200 c. What is the standard error of the sample proportion? p = square root of (1-) Ď Ď€ Î" = square root of. 40 (1 -.40) n 200 = square root of 0.00122262 = 0.04 d. In the sampling distribution of the proportion, what is the probability that a sample of this size wo proportion at least as large as that found in part (b) ? n = 200 = - 2.17 p = 0.035 Ď 0.04 0.4850 ÎĽ = 0.40 x = 0.35 Î" op. 5 +.4850 0.99
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