Yes they can just think of numbers with opposite signs
I-5I=I+5I the absoulte value is 5
Answer:
16,700
Step-by-step explanation:
38,428
_
21,728
=
16,700
Answer:
G(-3,-2) W(-3,0) E(1,1)
Step-by-step explanation:
Answer:
The z statistic is 0.23.
Step-by-step explanation:
Test statistic (z) = (sample mean - population mean) ÷ sd/√n
sample mean = 104 mg
population mean (mu) = 100 mg
sd = 55 mg
n = 10
z = (104 - 100) ÷ 55/√10 = 4 ÷ 17.393 = 0.23