Answer:
y=4x+7
Step-by-step explanation:
replace x by any one number and find out
Yes that’s right have a nice day
Good luck!
Answer:
0.00135
Step-by-step explanation:
Given that a textile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms.
H0: µ = 12 against H1: µ < 12
n =4
std error = ![\frac{0.5}{\sqrt{4} } =0.25](https://tex.z-dn.net/?f=%5Cfrac%7B0.5%7D%7B%5Csqrt%7B4%7D%20%7D%20%3D0.25)
Mean difference ![= 11.25 -12 = -0.75](https://tex.z-dn.net/?f=%3D%2011.25%20-12%20%3D%20-0.75)
Test statistic t = mean diff/std error = -3
p value=0.00135 <0.05 our significance level
So reject H0
There is evidence to prove that mean is less than 12 kg.
2 i believe because if .25 is equal to 1/8 then that mean the 4/8 would be equal to 1 and in turn 8/8 would equal 2.