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
motikmotik
2 years ago
13

A research group is on a college campus and is conducting a survey regarding the coffee consumption of college students in Ameri

ca. They randomly select three sample groups of 100 registered students to complete their survey, which asks the students to identify the average number of 8-ounce cups of coffee they consume each day. The results of the three sample groups are shown in the table below.
0 1 2 3 4+
Sample #1 38 19 26 16 1
Sample #2 32 14 37 15 2
Sample #3 41 22 31 6 0
One researcher looked at the results and made the following inference: "More college students don't drink coffee than do." Is this a valid conclusion? Explain your reasoning using complete sentences.
Mathematics
2 answers:
Anika [276]2 years ago
8 0
D is the answer to your question
ololo11 [35]2 years ago
6 0

Answer:

it is D because my teacher and I did a  sample test and these were one of the questions plus I've seen people with the same answer for this question. take my word for it

Step-by-step explanation:

hope this helps :D (pls brainliest

You might be interested in
Here's an easy question. Gina bought 2.5 pounds of peaches that cost $1.38 per pound at the grocery store. Amy went to the local
kakasveta [241]
Is Gina the right answer
4 0
3 years ago
Read 2 more answers
Please please Pleas answer this question please please
Ulleksa [173]

Answer:

3 can

Step-by-step explanation:

there

8 0
2 years ago
I need someone to help me do this, see attached documents for the questions
Brilliant_brown [7]

Answer:

<u><em>1.) 20.2</em></u>

Step-by-step explanation:

1.) You need to use the distance formula:

d=\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}

Find the distance of A to B first:

(-2,2)(3,2)\\\\\sqrt{(3+2)^2+(2-2)^2}\\\\\sqrt{(5)^2+(0)^2}\\\\\sqrt{25} =5

B to C:

(3,2)(-1,-5)\\\\\sqrt{(-1-3)^2+(-5-2)^2}\\\\\sqrt{(-4)^2+(-7)^2}\\\\\sqrt{16+49}\\\\\sqrt{65} =8.06=8.1

C to A:

(-1,-5)(-2,2)\\\\\sqrt{(-2+1)^2+(2+5)^2}\\\\\sqrt{(-1)^2+(7)^2}\\\\\sqrt{1+49}\\\\\sqrt{50}=7.07=7.1

Add distances to find the perimeter:

5+8.1+7.1=20.2

2.) Part A:

You need to use the mid-point formula:

midpoint=(\frac{x_{1}+x_{2}}{2} ,\frac{y_{1}+y_{2}}{2} )

(3,2)(7,11)\\\\(\frac{3+7}{2},\frac{2+11}{2})\\\\(\frac{10}{2},\frac{13}{2})\\\\m=(  5,6.5)

Part B:

1. Use the slope-intercept formula:

y=mx+b

M as the slope, b the y-intercept.

Find the slope of the two points A and B using the slope formula:

m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}} =\frac{rise}{run}

Insert slope as m into equation.

Take point A as coordinates (x,y) and insert into the equation. Solve for the intercept, b:

(y)=m(x)+b

Insert the value of b into the equation.

2.  Use the mid-point coordinate. Take the slope.

If you need to find the perpendicular bisector, you will take the negative reciprocal of the slope. Switch the sign and flip it. Ex:

\frac{1}{2} =-\frac{2}{1}=-2\\

Insert the new slope into the slope-intercept equation as m.

Take the mid-point coordinate as (x,y) and insert into the equation with the new points. Solve for b.

Insert the value of b.

4 0
3 years ago
Which of the following sentences is true?
mezya [45]

Answer:

A the first one

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Find the experimental probability of randomly selecting a marble that is either green or purple. Write your answer in simplest f
EastWind [94]
Green or purple = 10 prob(green or purple) = 10/30 = 1/3
3 0
3 years ago
Other questions:
  • Please! I need immediate help with this
    9·1 answer
  • Al used the expression
    15·1 answer
  • Plzzzzzzzzzzzzzzz
    11·1 answer
  • What kind of shape has 23 mm,20 mm,13 mm
    6·2 answers
  • What is -282 -20,320 written out
    11·2 answers
  • HELP! What is VT?<br><br><br> Geometry (10 pts)
    10·1 answer
  • Anyone know this ? I don’t understand math
    8·2 answers
  • Graph: y=3/4x+5 Please let me know guys
    6·1 answer
  • What is the answer to -3/4-1/2
    14·1 answer
  • What is the smallest number greater than 1 that leaves a remainder 1 when divided by each of 2, 3, and 4?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!