Sample size= n= 84
sample mean= x = 107 s
population standard deviation =σ= 11.7
As, population standard deviation is given so we use the estimate:
x(+/-) z(α/2)(σ/√n)
At 99% Confidence interval means significance level is α=1-0.99= 0.01
So,
α/2=0.005
Now, z at α/2=0.005
z= 2.576
Now, by putting values
107(+/-)((2.576)(11.7/√84))
( 107-((2.576)(11.7/√84)), 107+((2.576)(11.7/√84)) )
(103.7, 110.288)
I think you have to divide 275/5 and that will give you his speed for one hour.
Answer: 55 mph
Answer:
A.orange juice
F.Gasoline
H.Honey
Step-by-step explanation:
The answer is nine because 2(4)=8 3(2)=6 7=7, os 8-6+7= 2+7 =9
C4,1 because I solved it and it showed me
