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Aneli [31]
2 years ago
9

Does the type of program people watch influence how much they eat? A total of 94 college students were randomly assigned to one

of three treatments: watching 20 minutes of a Hollywood action movie (The Island), watching the same 20-minute excerpt of the movie with no sound, and watching 20 minutes of an interview program. While watching, participants were given snacks (M&M’S®, cookies, carrots, and grapes) and allowed to eat as much as they wanted. Subjects who watched the highly stimulating excerpt from The Island ate 65% more calories than subjects who watched the interview show. Participants who watched the silent version of The Island ate 46% more calories than those who watched the interview show.36 Identify the explanatory and response variables in this study. Then determine if it is an experiment or an observational study. Explain your reasoning.
Mathematics
1 answer:
jolli1 [7]2 years ago
8 0

Answer:

Television has been accused of helping people gain weight because it encourages a sedentary lifestyle. Television is like other entertaining activities that can get people to eat more, including reading, listening to the radio, and interacting with dinner mates.

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Find the vertex, focus, directrix, and focal width of the parabola. <br><br> x2 = 20y
sp2606 [1]
The parabola :
x² = 20 y
It is in the standard form : x² = 4 b y
b = 20 : 4 = 5
Vertex : ( 0, 0 );
Focus : <span>( 0,</span> 5 );
Directrix :  y + 5 = 0;  y = - 5
Focal width:  4 * 5  = 20 units
Answer: A )
4 0
2 years ago
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What do the differences between the points (as shown on the graph) represent? On a coordinate plane, point B is at (2, 7) and po
raketka [301]

Answer:

StartFraction 7 over 2 EndFraction can be used to find the unit rate if one divides 7 by 2 and compares the result to 1

Step-by-step explanation:

we know that

The formula to calculate the slope between two points is equal to

m=\frac{y2-y1}{x2-x1}

we have the points

B(2, 7) and D(4, 14)

substitute the values

m=\frac{14-7}{4-2}

m=\frac{7}{2}

The unit rate is

m=\frac{3.5}{1}

therefore

StartFraction 7 over 2 EndFraction can be used to find the unit rate if one divides 7 by 2 and compares the result to 1

7 0
1 year ago
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Georgina has a cube-shaped ring box. The volume of the box is 125 cubic centimeters. What is the length of the box in centimeter
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you need to find one side then see what multiples are equal to your answer
8 0
2 years ago
Jared is placing chairs around of rectangular stage. The stage is 10 feet long and 22 feet wide. He wants to put a chair at each
marishachu [46]
Hi there, I believe the answer is 20. Because, each corner is 4 chairs plus every two feet, equals 20. Hope this helps!
3 0
2 years ago
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LenKa [72]

Given:

It is given that surface area must be less than 150 cm².

Solution:

The Maximum Volume With Total Surface Area Less  than 150 cm² is shown in the table.

From the table, it can be concluded that for r=3.00 cm and h=4.95 cm the surface area will be less than 150 cm²  and the volume will be the maximum.

S=2\pi rh+2\pi r^2\\S=2\pi (3)(7.95)+2\pi3^2\\S=93.3+56.5\\S=149.8 \text{ cm}^2

Calculate the volume.

V=\pi r^2h\\V=\pi(3)^2(4.95)\\V=139.96

Hence, the required dimensions are r=3.00 cm and h=4.95 cm.

8 0
2 years ago
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