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qaws [65]
4 years ago
10

An energy drink company claims that its product increases students' memory levels. To support its claims, the company issues adv

ertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. The missing component in this study is a
A) control group B) sample group C) population D) test group
Mathematics
2 answers:
dexar [7]4 years ago
8 0
A) control group, they did not also survey 10 other ppl who took a placebo 
gladu [14]4 years ago
3 0

Answer: A) control group


Step-by-step explanation:

  • A control group is a group of participants who are used for comparing another group to in a test or experiment. It is composed of participants who do not receive the experimental treatment.

In the given situation an energy drink company claims that its product increases students' memory levels.

To support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory.

But they haven't compose a control group to compare the results for test.

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const2013 [10]

Answer:

Step-by-step explanation:

Dividing one number by another yields a quotient. The quotient of 9 divided by 15 can be expressed as a decimal or a fraction. Any time you divide a number by a larger number, the answer will always be less than one.

3 0
3 years ago
10x0+10x1<br> what is the answer ?
sesenic [268]

Answer:

10

Step-by-step explanation:

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6 0
2 years ago
Read 2 more answers
The magnitude scale for earthquakes is based on powers of 10. A magnitude 8 earthquake represents 108, while a magnitude 3 earth
Dmitry_Shevchenko [17]

Answer:

1.049

Step-by-step explanation:

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7 0
3 years ago
Can someone complete the square
pshichka [43]
To do these, start by looking at the "b" value -6.
divide it by 2

-6/2 = -3

now square this number

(-3)^2 = 9

this is what you need for the "c" value

there is only a 5 for the c value so add 4 to both sides of the equation. ( +4 = +4)

y +4 = x^2 -6x +5 +4
y +4 = x^2 -6x +9
y +4 = (x -3)^2
y = (x -3)^2 - 4

vertex ( 3, -4) upwards facing like a bowl, because the "a" value is positive. So the vertex is the minimum, lowest point on the graph.


7 0
4 years ago
Fill in what I haven't filled in
Lelu [443]
11/20=.55 =55% ; 1/400=.0025=.25% ; 5/8=.625=62.5%
7 0
4 years ago
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