Estimate the standard deviation of distribution

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Vance Containers produces a standard sized container called CarryAll. Since Vance Weiner started Vance Containers, sales have grown steadily. With the increase in the price of paper products, however, Vance has been forced to increase the price of the CarryAll. As a result, the demand for CarryAll has been fairly stable over the past 6 years. On average, Vance Containers has sold 457,000 CarryAll containers each year. Furthermore, 90% of the time sales have been between 454,000 and 460,000 containers. It is expected that the sales follow a normal distribution with a mean of 457,000 containers. Estimate the standard deviation of this distribution. (Hint: Work backward from the normal table to find Z.)

Reference no: EM131960918

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