In a recent sample of 140 used car sales, the sample mean was $6,425 with a standard deviation of $3,156. Construct a 95% confidence interval for the population mean cost of a used car. a. (5877, 6973) b. (5799, 7051) c. (5898, 6952) d. (5855, 6996)
Added by Eric H.
Step 1
We are given the sample mean ($\bar{x}$) = $6,425, the sample standard deviation (s) = $3,156, and the sample size (n) = 140. Show more…
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