Answer:
<em> The 99% confidence interval for the mean repair cost for the VCRs</em>
(65.801, 85.199)
Step-by-step explanation:
<u><em>Explanation:-</em></u>
Mean of the sample(x⁻) = $75.50
Given the standard deviation of the sample (S) = $18.07
Given the size of the sample 'n' = 22
Degrees of freedom = n-1 =22-1 =21
critical value t₍₀.₀₁, ₂₁₎ = 2.5176
<em> The 99% confidence interval for the mean repair cost for the VCRs</em>
( 75.50 - 9.699 , 75.50 + 9.699 )
(65.801, 85.199)
<u><em>Final answer:-</em></u>
<em> The 99% confidence interval for the mean repair cost for the VCRs</em>
(65.801, 85.199)
To find the coordinates for Z, we first need to find Z.
Z is at the top right of the first quadrant/Quadrant 1 (top right square). To find the coordinates, look for the lines that intersect on Z.
For the X-Axis (Horizontal line, side to side),it is at 9. This means the first half of our coordinates is (9,y), so we can eliminate the second and last answer choices.
For the Y-Axis (Vertical line, straight up and down), Z it located on the 10th line, so the second coordinate for Z is 10.
Our coordinates are (9,10).
Your correct answer is A.), as we are in Quadrant 1.
I hope this helps!
<h3>2000 items cost $ 7500</h3>
<em><u>Solution:</u></em>
Given that,
The function is:
C(x) = 1500 + 3x
Where,
C(x) is the total cost
"x" is the number of manufactured items
<em><u>How much would 2,000 items cost</u></em>
Substitute x = 2000 in given function
C(2000) = 1500 + 3(2000)
C(2000) = 1500 + 6000
C(2000) = 7500
Thus 2000 items cost $ 7500
Answer:
y=1/2x-5
Step-by-step explanation:
From the picture you can see that (0, -5) is a point on the function and that (2, -4) is another point. Using these you can find the slope of the function with the equation
We can substitute in the points so it looks like
or which is the slope of the function
Now, since the y-intercept is (0, -5) on the graph, the b part in the slope-intercept form of the equation would be -5, leaving us with the equation y=1/2x-5
72.25 - 51.5= <span>20.75
it is 20.75 feet longer</span>