Answer:
Step-by-step explanation:
Given
Required
Select 3 equivalent expressions
Express 9 as 3^2
--- This is one equivalent expression
Take as difference of two squares
-- This is another equivalent expression:
Solving further:
becomes
-- This is another equivalent expression:
Hence, the equivalent expressions are:
Answer:
99.7% data lies between 13 to 43
Step-by-step explanation:
Mean:
Standard deviation :
68% of data lies between to
95% of the data lies between to
99.7% data lies between to
We are supposed to find 99.7 of the data will lie between which values
99.7% data lies between to
99.7% data lies between 13 to 43
Hence 99.7% data lies between 13 to 43