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
maks197457 [2]
3 years ago
11

A study is conducted to investigate whether customer satisfaction is greater among computer companies that offer tech support ve

rsus those that do not offer tech support. A random sample of 50 customers are selected from among those that purchased computers that offer tech support. A separate random sample of 40 customers are selected from among those that purchased computers that do not offer tech support.
The study found that the mean satisfaction rating was significantly greater among customers that purchased computers that offer tech support.
Which of the following is the best description of this study?
(A) An experiment using a completely randomized design.
(B) An experiment using a randomized block design.
(C) An experiment using a matched pairs design
(D) An observational study using a simple random sample.
Mathematics
1 answer:
TiliK225 [7]3 years ago
7 0

Answer:

The correct answer is (E).

This is not an experiment because no treatment is being imposed upon the customers. Additionally, this study used a stratified sample because independent random samples were selected from two distinct populations of customers.

Step-by-step explanation:

You might be interested in
the price of an item originally priced at $24 was increased by 15%. what percentage decrease will restore it to its original pri
konstantin123 [22]

Answer:

$20.40

Step-by-step explanation:

First of all we find the value of 10%, so we do 24 ÷ 10 which equals to 2.4, then we find the halved value of 2.4, so we do 2.4 ÷ 2 which equals to 1.2. Then we add 2.4 and 1.2 together, which then gives us 3.6 as the number. We then subtract 3.6 from 24 which gives us 20.4, but we need in money terms so we change it to $20.40. Hope this helps.

7 0
2 years ago
What is the theoretical probability of rolling a 3?
aleksandrvk [35]

Answer:

1/6

Step-by-step explanation:

the number on the bottom of the fraction (denominator) is equal to the total number of possibilities (in this case there are 6 possibilities). for the number on top (the numerator) we are trying to work out the probability of rolling a 3. a 3 is only 1 of the 6 options (1, 2, <u>3</u>, 4, 5, 6) so the number on top is 1.

I hope this was helpful :-)

7 0
3 years ago
PLEASE ANSWER!!! You are helping wish some repairs at home. you drop a hammer and it hits the floor at a speed of 12 feet per se
Andru [333]

Answer:

h = 2.25 m

Step-by-step explanation:

<u><em>Given:</em></u>

Speed = v = 12 ft/sec

Acceleration due to gravity = g = 32 ft/sec²

<u><em>Required:</em></u>

Height = h = ?

<u><em>Formula:</em></u>

v = \sqrt{2gh}

<u><em>Solution:</em></u>

For h, the formula will be:

=> h = \frac{v^2}{2g}

=> h = \frac{(12)^2}{2(32)}

=> h = \frac{144}{64}

=> h = 2.25 m

8 0
3 years ago
An uber driver charges a flat fee of $9 to
Ulleksa [173]

Answer:

c=0.35m+9

$11.45

8 0
3 years ago
X+20≥-7 i need help pls lollllllllllllllllllllllllll
Zina [86]

Answer:

Step-by-step explanation:

x is greater or equal to 13

7 0
3 years ago
Other questions:
  • If A=3x2+5x-6and B=-2x2-6x+7then A-B equals
    15·1 answer
  • Which statement is true regarding the graphed functions?
    10·2 answers
  • 10. Find the value of x.<br><br> (5x+12)<br> (3x+8)
    13·2 answers
  • Figure ABC is to be translated to Figure A'B'C' using the rule (x, y) → (x−3, y+4). Which coordinates will best represent point
    8·1 answer
  • What is the answer to 8x8
    6·1 answer
  • Soundtronics is a company that manufactures inexpensive headphones at a high volume. Due to the high production rate, some of th
    6·2 answers
  • 9a+6s equals cost for a adults and s students
    13·2 answers
  • The price of a ring varies jointly with
    10·1 answer
  • The price of shoes is $52.00. If you order them directly from the company on the internet, you can save money and the price is o
    14·2 answers
  • PLEASE HURRY
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!