Answer:
a) -12
b) -4
c)-2
Step-by-step explanation:
a) pattern is minus 5
b) pattern is minus 8
c) pattern is plus 4
Answer: option D
Step-by-step explanation:
The formulae for standard error = standard deviation/√n
But population standard deviation = 1.8 and sample size = n = 81
Standard error = 1.8/√81 = 1.8/9 = 0.2
2000 smartphones and 1500 flip phones
4-3=1
1x500=500
500x4=2000
500x3=1500
False 3/4 is smaller than 7/8
