1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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.

You might be interested in
Sari is factoring the polynomial 2x2+5x+3. If one factor is (x+1), what is the other factor?
ss7ja [257]

Answer:

B

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Does brainly customer support have a phone number it wont let me use my brainly plus on the same account on the computer this is
serious [3.7K]

Answer:nope

Step-by-step explanation: I wish

6 0
3 years ago
Solve 2(3-a)=18 for a
Alinara [238K]

Answer:

a=-6

Step-by-step explanation:

2(3-a)=18

3-a=18/2

3-a=9

a=3-9

a=-6

7 0
3 years ago
Read 2 more answers
Lim (x+1) (3x^2-9)<br> X2
mafiozo [28]

Answer:

\lim_{x \to 2} (x+1)(3x^2-9) = 9

Step-by-step explanation:

Step 1: Write out limit

\lim_{x \to 2} (x+1)(3x^2-9)

Step 2: Evaluate

(2 + 1)(3(2)² - 9)

3(3(4) - 9)

3(12 - 9)

3(3)

9

5 0
3 years ago
Does bin width matter when it comes to histograms? Why or why not?
maw [93]

Answer:

Avoid histograms with small bin widths that group data into lots of bins. A histogram constructed with small bin widths will show the distribution as a “pancake.” so no it does not help us see the pattern in the data.

Step-by-step explanation:

4 0
2 years ago
Other questions:
  • What do I write help!​
    13·1 answer
  • An airline claims that 90% of the time, its planes are on schedule. If three flights are selected at random, what is the probabi
    8·1 answer
  • How many units is 1 from -6 on a number line
    5·1 answer
  • I need help asap 3x + 1 over 4y2
    10·1 answer
  • Study the geometric sequence {-4, -84, -1764, -37044, ...}.
    6·1 answer
  • Will you help me on both
    9·1 answer
  • Find the HCF of 168 and 196.
    6·2 answers
  • Of 20 possible​ books, you plan to take 6 with you on vacation. How many different collections of 6 books can you​ take?
    10·1 answer
  • HELP!! THIS IS A CRY FOR HELPPPPPP!<br> 5x-4+3 Simplifies to...?<br> Tysm if you answer!!!!!!
    9·2 answers
  • the property taxes on your home will go up 6% next year. Currently, you pay $2,500 . How much will you pay next year?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!