An accounting firm is planing for the next tax preprationseason. From lst year\'

Question

An accounting firm is planing for the next tax preprationseason. From lst year's returns, the firm collects asystematic random sample of 100 filings. The 100 filingsshowed an average preparation tme of 90 minutes with a standarddeviation of 140 minutes. What assumptions do you need to make about the shape of thepopulatin distribution of all possible tax preparation times tomake inference about the average time to complete a tax form? A. The population distribution is skewed to theright. B. The population distribution is skewed to theleft. C. The population distribution is normal. D. The shape of the population distribution does notmatter. An accounting firm is planing for the next tax preprationseason. From lst year's returns, the firm collects asystematic random sample of 100 filings. The 100 filingsshowed an average preparation tme of 90 minutes with a standarddeviation of 140 minutes. What assumptions do you need to make about the shape of thepopulatin distribution of all possible tax preparation times tomake inference about the average time to complete a tax form? A. The population distribution is skewed to theright. B. The population distribution is skewed to theleft. C. The population distribution is normal. D. The shape of the population distribution does notmatter.

Explanation / Answer

The sample size is quite large, so the shape of the populationdoesn't matter ==> D (Just as an aside, the population has to be right-skewed since theSD is way bigger than the mean and the prep time cannot be lessthan 0.)

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