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ki77a [65]
3 years ago
12

Probability distribution part 2​

Mathematics
1 answer:
steposvetlana [31]3 years ago
7 0

Answer:

  b.  -0.862

Step-by-step explanation:

The only answer choice with a minus sign is B, which is the correct choice.

When the value of interest is below the mean (2800 is below 3550), the z-score will be negative:

  z = (2800 -3550)/870 = -750/870 ≈ -0.86207 ≈ -0.862

_____

As always, z is computed as ...

  Z = (X -μ)/σ

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Two rectangular picture frames have the same area of 45 square inches but have different side lengths. Frame A has a length of 6
Vilka [71]

9514 1404 393

Answer:

  1. the longer frame (B) has the shorter width

  2. the shorter width is 6 3/7 inches, area divided by length

Step-by-step explanation:

The relation between area, length, and width is ...

  A = LW

Then the width is ...

  W = A/L . . . . .  inversely proportional to length

__

1. Since length and width are inversely proportional (when area is constant), the shorter width will be associated with the longer length. Frame B will have the shorter width.

__

2. The width of frame B is ...

  W = A/L = (45 in²)/(7 in) = 45/7 in = 6 3/7 in

5 0
3 years ago
Mariko has an 80: 1 scale drawing of the floor plan of her house. On the floor plan
Ivan

Answer:

16,771.56 square feet.

Step-by-step explanation:

In order to get to the result we will need to use the scale and the numbers that are provided of the dimensions of the room.

The dimensions of the room on the floor plan are 17.8 inches by 21.2 inches. We first need to multiply these numbers with the scale:

17.8 x 80 = 1,424

21.2 x 80 = 1,696

Now that we got the real measures we need to multiply these two values in order to get to a result as in how many square inches is the room:

1,424 x 1696 = 2,425,104

Now we need to convert the square inches into square feet to get to the final result:

1 ft² = 144 in²

2,425,104 / 144 = 16,771.56

So we have a result of 16,771.56 square feet.

4 0
3 years ago
Two sides of a triangle are 5 and 10. Which is a<br> possible length for the third side?
Sever21 [200]

Answer:

4

Step-by-step explanation:

5 0
2 years ago
Lionel created a picture to hang on his wall. The drawing is below. Each circle has a radius of 8cm. The circles touch each othe
Vikki [24]

Answer:

888888

Step-by-step explanation:

88888888888888888888

7 0
2 years ago
Read 2 more answers
What is the volume of the sphere with a 12 cm radius
professor190 [17]

Answer:

2304 pi cm^3

Step-by-step explanation:

The equation is 4/3(pi)(r^3). From there, you can just plug in the given radius value and solve the equation!

6 0
2 years ago
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