Suppose taxi fare from logan airport to downtown boston is known to be normally distributed with a standard deviation of $2.50. the last seven times john has taken a taxi from logan to downtown boston, the fares have been $22.10, $23.25, $21.35, $24.50, $21.90, $20.75, and $22.65.
what is a 95% confidence interval for the population mean taxi fare?

95% Confidence interval for taxi fare:  ($20.5,$24.2)

Step-by-step explanation:

We are given the following data set: for fares:

$22.10, $23.25, $21.35, $24.50, $21.90, $20.75, and $22.65

Formula:

95% Confidence interval:

Putting the values, we get,

explanation:

step-by-step explanation:

all you should have to do is insert 1 where the c is, representing that one car is sold.

f(c) = 250c + 500

f(1) = 250(1) + 500

f(1) = 250 + 500

f(1) = 750

he earns $750 for each car sold.

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