The mean shoe size of the students in a math class is 7.5. most of the shoe sizes fall within 1 standard deviation, or between a size 6 and a size 9.

What is the standard deviation of the shoe size data for the math class?

✔1.5

❌2.7

❌3.0

❌3.8

Step-by-step explanation:

m∠5 + m∠3 = m∠1   is true.

m∠5 + m∠6 = 180 is true

m∠2 +m∠3 = m∠6   is true

m∠2 +m∠3 +m∠5 = 180   is true

i need a diagram

step-by-step explanation:

no