Answer:
y=5/4x-5
Step-by-step explanation:
y-y1=m(x-x1)
y-0=5/4(x-4)
y=5/4(x-4)
y=5/4x-20/4
y=5/4x-5
Answer:
A
Step-by-step explanation:
change them both to absolute values->
3 and 7->
then compare->
7 is bigger :)
Answer:
C. 
Step-by-step explanation:
Consider inequality 
Divide it by 4:
This inequality is equivalent to two inequalities:
Hence
So,
Answer:
1. Type I error = 0.0241
2. Power of test = 0.2146
Step-by-step explanation:
1.
Test statistic:
z = (x- µ)/(σ/√n)
= (0.15 - 0.125)/(0.04/√10)
= 0.025/0.0126
= 1.9764
p-value = 1- NORM.S.DIST(1.9764, 1)
= 0.0241
Type I error = 0.0241
2.
If true µ₁ = 0.14,
then Power, (1 - β) is given as;
1 - β = P(X ≥ 0.15 | µ₁ = 0.14)
= P(Z ≥ (0.15 - 0.14)/(0.04/√10) )
= P(Z ≥ 0.79)
= 1 - P(Z < 0.79)
Using excel function :
= 1 - NORM.S.DIST(0.79, 1)
= 1 - 0.7854
= 0.2146
Power of test = 0.2146
