The Daily Revenue from the Sale of Fried Dough at a Local

question 126

Multiple Choice

The daily revenue from the sale of fried dough at a local street vendor in Boston is known to be normally distributed with a known standard deviation of $120. The revenue on each of the last 25 days is noted, and the average is computed as $550. Construct a 95% confidence interval for the population mean of the sale of fried dough by this vendor.

• A) 120 ± 1.645(550/5)
• B) 120 ± 1.96(550/5)
• C) 550 ± 1.645(120/5)
• D) 550 ± 1.96(120/5)

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