Answer:
8
Step-by-step explanation:
mean of A=28+23+30+25+27/5 = 26.6
average of B=22+19+15+17+20/5 = 18.6
now,
difference= 26.6-18.6
=8,,
Answer: B( 5 : 15,0)
Step-by-step explanation: Please find the attached file for the solution
D. The exclusion is important because we cannot divide by zero. Apart from that we are simply looking at a function.
Answer:
C. 9
Step-by-step explanation: