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)
False
I think that’s right because three times 5 is 15 increased by four is 19 not -8 so...
Oh all you do is however many numbers in the chart are the same. on the line put how many of each of them. like since there are three 7.5 in the 7.5 place you put how many there were.
Answer:
30
Step-by-step explanation:
5 times 19-13 would equal 30 as 19-13 is 6 times 5 =30
