Sales from a chain of computer stores are normally distributed... Sales from a c

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Sales from a chain of computer stores are normally distributed...

Sales from a chain of computer stores are normally distributed with an average monthly sales volume of $280,560. Estimating the amount of monthly variability in sales is of interest to help anticipate normal income fluctuations. A random sample of 8 months yields a standard deviation of $10,423. Construct a 98% confidence interval on the standard deviation of monthly sales volume. ($172,694.71. $666,866.84) ($6,152.47. $21,491.21) ($6,123.96. $27,725.40) ($6,415.73. $24,774.57)

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Sales from a chain of computer stores are normally distributed... Sales from a c

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