Question

The mean number of songs downloaded by a group of teens last month was 28 with a standard deviation of 3. If the number of songs that Jack downloaded wos one standard deviation below the mean, how many did

he download?

Answer 1

• Jack downloaded 25 songs

Explanation:

• The mean = 28
• The standard deviation = 3

One standard deviation below the mean:

• 28 - 3 = 25

Jack downloaded 25 songs