Answer:
The most appropriate inference procedure for the investigation is;
a. A linear regression t-interval for the slope
Step-by-step explanation:
Given that the slope of an horizontal line is zero, we have that there is no change in the y (dependent) variable when there is a change in the x-variable, therefore, it is important to find the true relationship between the two variables, 'x', and 'y'
The confidence interval of the slope is calculated and analyzed to determine if it excludes or includes, 0, such that, if the confidence interval exclude 0, then, it is unlikely that the slope is 0, therefore, there the relationship between the variables, 'x', and 'y' is significant
Therefore, a linear regression t-interval for the slope is most appropriate.
Answer:
It is a perfect square trinomial.
You split it into two binomials.
(E + 8)(e+8)
Step-by-step explanation:
Answer:
And we can find the probability with this difference:
And using the normal standard table or excel we got:
And the best answer would be:
0.3811
Step-by-step explanation:
Let X the random variable that represent the ratings of a population, and for this case we know the distribution for X is given by:
Where 
and 
We are interested on this probability
And the best way to solve this problem is using the normal standard distribution and the z score given by:
Using the z score we got:
And we can find the probability with this difference:
And using the normal standard table or excel we got:
And the best answer would be:
0.3811
Answer:
yes
Step-by-step explanation:
80 ÷ 20 = 4
56 ÷ 14 = 4
yes they are equivalent
Answer:
Length-65 ft Width: 85
Step-by-step explanation:
Let's set the length as x, and the width as x+20 (because it is 20 ft longer than length)
We know that 2L+2W=Perimeter
We can substitute x and x+20 in for 2L and 2W, and 300 for Perimeter
New Equation: 2(x) +2(x+20)=300
After Distribution: 2x+2x+40=300
Combine like terms: 4x+40=300
Subtract 40 from both sides: 4x=260
Divide 4 on both sides and you get x=65 (Length)
Add 20 to get width : x+20= 85
I hope it helped! :)
