Question

Suppose the test scores on an exam show a normal distribution with a mean of 82 and a standard deviation of 5. Within what range do about 95% of the scores fall?

Answer 1

Do you know the empirical rule for a normal distribution?

Answer 2

i don't remember it

Answer 3

Approximately 95% of the data points lie within the range\[\pm2\sigma\ of\ \mu\]
Can you find the range of the scores now?

Answer 4

is it 72 < x < 92

Answer 5

Good work! You answer is correct :)

Answer 6

thank you @kropot72

Answer 7

You're welcome :)