Answer: B. 95.0
Step-by-step explanation:
In statistics , the famous empirical rule says that " if the data is normally distributed then 68% of the observations will be contained within [tex]\pm1[/tex] standard deviations from the arithmetic mean, 95% of the observations will be contained within [tex]\pm2[/tex] standard deviations from the arithmetic mean and 99.7% of the observations will be contained within [tex]\pm3[/tex] standard deviations from the arithmetic mean".
Hence, B is the correct answer.
