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Computers and Technology, 05.11.2020 16:40 mokietreu
A sample of 30 households showed that the sample mean of back-to-school spending is $622.85. It is believed that back-to-school spending is normally distributed with a population standard deviation of $65. An analyst wishes to test if the average back-to-school spending differ from $606.40 per family predicted by the trade group at the 5% significance level.
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A sample of 30 households showed that the sample mean of back-to-school spending is $622.85. It is b...
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