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Olenka [21]
3 years ago
10

In a random sample of 20 ​people, the mean commute time to work was 33.5 minutes and the standard deviation was

Mathematics
1 answer:
STALIN [3.7K]3 years ago
6 0
Construct<span> the </span>confidence interval<span> for the </span>population mean<span> it </span>using<span> a </span>t-distribution<span>. ... In a </span>random sample<span> of eight </span>people<span>, the </span>mean commute time<span> to </span>work<span> was 35.5 </span>minutes<span> and the sample </span>standard deviation<span> was. </span>7.2 minutes<span>. ... </span>Use<span> a </span>t-distribution<span> to find the margin of error and </span>construct<span> a 95% ...</span>Assume normal<span> distribution.</span>
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Which of the following represents the area of a rectangle whose length is x + 1 and whose width is x + 11?
shtirl [24]
You would foil (x+1)(x+11)

x^2 + 12x + 11
8 0
4 years ago
HELP PLEAASE I WILL GIVE BRAINLIEST PLSSSSSS I WILL GIVE BRAINLIEST
kotykmax [81]

Answer:

It is B

Step-by-step explanation: n is -1.5 and m is 2.5

-1.5 + 2.5 = 2

3 0
3 years ago
Read 2 more answers
15 POINTSSS ANSWER ASAP PLEASE!!!!! What is the equation, in point-slope form, of the line that is
Gnesinka [82]

Answer:

The Answer is : D

Step-by-step explanation:

First find the slope of the line that the equation should be parallel to. In this case it is 2/1 which simplified is 2.

Next insert the X (4) of the point (4,1) and solve to see if you get the Y(1).

y-1 = 2 (4-4)

y-1= 2 (0)

y-1= 0

y= 1

In this case D is correct.

TIP*

If you see the question ask you about a parallel formula, look at the slopes of them to see if they match up. Parallel formulas have the same slope, just a tip because you can see in the answer choices none of the equations have the same slope as the line on the graph except for D.

4 0
3 years ago
Answer Question Pls? I need Help!!
QveST [7]

Answer:

option D

Step-by-step explanation:

Take the two through which the lines passes.

Let it be ( -5 , 0) and ( 0 , -3)

Step 1 : Find slope, m

     Slope,m = \frac{y_2 -y_1}{x_2 - x_1}

                  = \frac{-3-0}{0--5} = \frac{-3}{5}

Step 2 : Find the equation

      (y - y_ 1) = m( x - x_1)\\\\( y - 0) = \frac{-3}{5} (x --5) \\\\y = -\frac{3}{5}( x  + 5 ) \\\\y = -\frac{3}{5}x  - 3

8 0
3 years ago
If you take a number multiply by 7 then takeaway 1. You get the same as if you took the number multiply by 5 then takeaway 8. Wh
muminat
7x - 1 = 5x - 8
Minus 5x on each side
2x -1 = -8
Plus 1 on each side
2x = -7
Divide by 2 on each side
x = -7/2

The number is most likely -7/2
7 0
3 years ago
Read 2 more answers
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