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hjlf
3 years ago
10

​A manager wants to know if the mean productivity of two workers is the same. For a random selection of 30 hours in the past​ mo

nth, he compares the number of items produced by each worker in that hour.A. The data should be treated as paired samples. Each pair consists of an hour in which the productivity of the two workers is compared.B. The data should be treated as paired samples. Each pair consists of two hours in which the number of items produced is compared.C. The data should be treated as independent samples because the samples are random.
Mathematics
1 answer:
vekshin13 years ago
7 0

Answer:

A.The data should be treated as paired samples. Each pair consists of an hour in which the productivity of the two workers is compared.

Explanation:

If the mean productivity of two workers is the same.

For a random selection of 30 hours in the past month, the manager compares the number of items produced by each worker in that hour.

There are two samples and the productivity of the two men is paired for each hour.

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Point A has coordinates (3, 4). After a translation 4 units left, a reflection across the x-axis, and a translation 2 units down
adelina 88 [10]
(-1, 2)

So the original point is (3, 4), when you move to the left or right, it changes the x value. When moving it to the right, you add the amount. When moving to the left, you subtract the amount

So after translating the point 4 units to the left, it should be (-1, 4).

Now, you have to move down. When moving up and down, you add or subtract to the y value. When moving up, you add to the amount. When moving down, you subtract the amount.

After subtracting 2, you should be at (-1, 2)
4 0
3 years ago
Victor drew trapezoid PQRS on a coordinate plane p(7,4) q(10,4) r(13,-1) s(8,-1) what is length in units of side ps
olga nikolaevna [1]

Answer:

PS=\sqrt{26}units

Step-by-step explanation:

Given : PQRS is a trapezoid on a coordinate plane P(7,4) Q(10,4) R(13,-1) S(8,-1).

To find:: Length of the side PS

Solution : Using the distance formula, we can find the length of the side PS, therefore

PS=\sqrt{(y_{2}-y_{1})^2+(x_{2}-x_{1})^2}

PS=\sqrt{(-1-4)^{2}+(8-7)^2 }

PS=\sqrt{(-5)^2+(1)^2}

PS=\sqrt{25+1}

PS=\sqrt{26}units

which is the required length of the side PS.

5 0
3 years ago
For what values of them will the expression below be a perfect square? <br> 9x^2+30x+m
matrenka [14]
I am so so so sorry I do not know the answer but I might later in the shool year
4 0
3 years ago
A cylinder has a height of 10 inches and a radius of 17 inches. What is its volume? Use ​ ≈ 3.14 and round your answer to the ne
Gelneren [198K]

Steps:

Radius= 17in

Height= 10in

Formula: V=πr2h

Shape: Right cylinder

Solved for volume

H= Height

R= Radius

Description:

We know that R is 17 inches, and H is 10 inches. Since we are finding the volume we use the formula V=πr2h to calculate. After calculating your answer will come as V≈9079.2in³. You also said to round your answer to the nearest hundredth. After rounding your answer to th enearest hundredth your answer will come as 9,079.20.

Answer: V≈9079.2in³

Round to the nearest hundredth = 9,079.20

Please mark brainliest

<em><u>Hope this helps.</u></em>

8 0
3 years ago
21) Find x. Show your work.
shepuryov [24]

Answer:

x = 21

Step-by-step explanation:

Givens:

Every triangle's interior angles add up to 180°

The triangle has a right angle.

The triangle is isosceles (two equal sides and two equal angles)

Let's make an equation with the information we have already.

2 × (2x + 3) + 90 = 180

4x + 6 + 90         = 180

4x + 96                = 180

4x                         = 84

x                           = 21

4 0
3 years ago
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