Answer:
any number greater than 16 is fine.
Step-by-step explanation:
if a=2
then, 2(a+6) = 2(2+6)=2*8=16
Answer:
b)
Step-by-step explanation:
All you do is multiply 300*.27=
81
Answer:
a) Sample co-variance = -1.5
b) Sample correlation = -0.4404152
c) Weak negative relationship between X and Y.
Step-by-step explanation:
a) by sample co-variance = sum ((x - xbar)* (y-ybar)/n-1
#.... use the following program in R
x = c(7,8, 5, 3, 9)
y = c(7,5,9,7,7)
sv = sum((x-mean(x))*(y-mean(y)))/4
cor(x,y)
####################################
1st Question:
1/6, 2/6, 3/6 = 1/2, 4/6, 5/6, 6/6.
Halfway between 1/2 and 5/6 is 4/6 = 2/3.
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2nd Question: Could've been worked out on a calculator.
-5/6, -7/9, -3/5, -3/7
