3.A recent study of New York City Taxi Drivers Association found that the mean fare charged was from Kennedy Airport to Madison Square Garden was $21 and a standard deviation of $3.50.The data is a normal distributionThe sample size was 16.The 99% confidence interval is:

a.

Between $18.76 and $23.24

b.

Between $18.72 and $23.28

c.

Between $18.42 and $23.58

d.

Between $19.83 and $22.17