Vehicle speeds at a certain highway location have a mean of 100 kmh and a standard deviation of 10 km/h, with a distribution that is approximately normal. A simple random sample of 25 vehicles is...

Vehicle speeds at a certain highway location have a mean of 100 kmh and a standard deviation of 10 km/h, with a distribution that is approximately normal. A simple random sample of 25 vehicles is taken. There is a 95% chance that the mean speed of the sampled vehicles is between which of the values below, in km/h?

(a) 98 and 102

(b) 99.6 and 100.4

(c) 80 and 120

(d) 97 and 103

(e) 96 and 101