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qaws [65]
3 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]3 years ago
8 0
A) control group, they did not also survey 10 other ppl who took a placebo 
gladu [14]3 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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Write an equation for a line that is parallel to the graph of y = -3x + 6 and passes through the point at (-4, 7)
ale4655 [162]
Y = -3x + 6....the slope here is -3. A parallel line will have the same slope.

y = mx + b
slope(m) = -3
(-4,7)....x = -4 and y = 7
now we sub into the formula and find b, the y int
7 = -3(-4) + b
7 = 12 + b
7 - 12 = b
-5 = b
so ur parallel equation is : y = -3x - 5 <==
4 0
3 years ago
Please help! Will give Brainliest!!!!~
Zepler [3.9K]

Answer:

  the first selection is so shaded

Step-by-step explanation:

Each strip is divided into 10 parts. 1/5 will be represented by 2 of those parts, so 2/5 will be represented by 4 of the 10 parts. The 3/10 used on the other gift will be represented by 3 additional parts. So, a total of 7 of the 10 parts of the strip need to be colored to represent the ribbon used.

7 0
2 years ago
20.3 is 4 times as large as some number. What is the number?
neonofarm [45]
The answer would be 81.2 because all you gotta do it 20.3 times 4

7 0
2 years ago
Read 2 more answers
PLEASSEEEE HELP W THIS QUESTION!!!!
brilliants [131]
X/28 = 5/7
x = 28 * 5 / 7
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answer
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3 0
3 years ago
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A washer and a dryer cost $995 combined. The washer cost $45 more than the dryer. What is the cost of the dryer?​
Talja [164]

When a washer and a dryer cost $995 combined. If  the washer cost $45 more than the dryer, then the cost of the dryer is $475

The combined cost of a washer and a dryer = $995

Consider the cost of a dryer as x

The washer cost $45 more than the dryer.

The cost of the washer = x+45

Then the equation will be

x+x+45 = 995

2x+45 = 995

2x = 950

x = 950/2

x = 475

The cost of the dryer is $475

Hence, when a washer and a dryer cost $995 combined. If  the washer cost $45 more than the dryer, then the cost of the dryer is $475

Learn more about equation here

brainly.com/question/1625308

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8 0
9 months ago
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