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The general manager of a logistic consulting group believes that 28% of the firm's orders come from new customers. A simple random sample of 120
The general manager of a logistic consulting group believes that 28% of the firm's orders come from new customers. A simple random sample of 120 orders was selected.Using the manager's belief, determine:
1. The standard error for the sampling distribution of proportion.(3 decimal place)
2. The probability that the proportion of firm's orders that come from new customers is outside the range of 25% to 31%(3 decimal places)
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