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2003, mean annual spending per Medicare enrollee was $6,833 inwhole United States. To determinemean annual Medicare...

2003, mean annual spending per Medicare enrollee was $6,833 inwhole United States. To determinemean annual Medicare spending in Indianapolis was lower than the national mean, a researcher sampled 40 Medicare enrollees there. The sample mean was $5,980 and the standard deviation was $2,518. What is the 90% confidence interval for the population mean?

(5,199.66, 6,760.34)

(4,926.94, 7,033.06)

(5,317.77, 6,642.23)

(5,054.35, 6,905.65)

(5,470.39, 6,489.61)
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