DA0-001 · Question #137
DA0-001 Question #137: Real Exam Question with Answer & Explanation
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Question
The sales of a grocery store had an average of $8,000 per day. The store introduced several advertising campaigns in order to increase sales. To determine whether the advertising campaigns have been effective in increasing sales, a sample of 64 days of sales was selected, and the sample mean was $8,300 per day. The correct null and alternative hypotheses to test whether there has been a significant increase are:
Options
- ANull: Sample mean is 8,000; Alternative: Sample mean is greater than or equal to 8,000.
- BNull: Sample mean is 8,000; Alternative: Sample mean is greater than 8,000.
- CNull: Population mean is 8,000; Alternative: Population mean is greater than or equal to 8,000.
- DNull: Population mean is 8,000; Alternative: Population mean is greater than 8,000.
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