The highway fuel economy of a 2016 Lexus RX 350 6-cylinder 3.5-L automatic 5 speed using premium fuel is normally distributed random variable with a mean of μ = 23.50mpg and a standard deviation of σ = 2.50mpg. Within what interval would you expect the sample mean to fall with 98 percent probability? Round answer to 4 decimal places.
a) [20.1025, 26.8975]
b) [18.2591, 28.7409]
c) [19.1236, 27.8764]
d) [21.5984, 25.4016]