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
densk [106]
2 years ago
15

Cheryl wants to find the number of hours seventh-graders do homework each week. There are 297 boys and girls in seventh grade. I

f Cheryl randomly surveyed 50 girls in the entire school to find the number of hours seventh-graders do homework each week, describe why she would get a biased sample
Please help ASAP
Mathematics
1 answer:
marta [7]2 years ago
5 0

Note that Cheryl wants to find the number of hours <u>seventh grade boys and girls</u> spend on homework each week.

There are multiple causes of a biased sample.  Two of the most obvious ones I find are:

1.  She's surveying <u>girls</u>, but she is trying to get data on the number of hours <em>all</em> seventh graders (boys <em>and</em> girls) spend.

2. She's surveying 50 girls from the <u>entire school</u>, although she is trying to get data on seventh graders only.

You might be interested in
A battalion of 520 soldiers goes through 16,380 pounds of rations in 3 weeks. If 780 more soldiers join the battalion, how many
Scorpion4ik [409]

They would need 34.125 tons of rations.


In order to find this, we first need to see how many pounds of rations a single soldier eats in a week. To do this, we take the total eaten in 3 weeks and divide by 3. Then we divide by the number of soldiers.


16,380/3 weeks= 5460 lbs per week


5460/520 soldiers = 10.5 lbs per soldier per week


Now we look to see how many soldiers we will have in total after adding. There are 520 to start and we add 780 to get 1300 total. Next we multiply that by the total per soldier per week.


10.5lbs per soldier per week * 1300 soldiers = 13,650lbs per week


Then we have to multiply by the 5 weeks that battalion will be there.


13,650lbs * 5 weeks = 68,250lbs of rations or 24.125 tons.


5 0
3 years ago
Which of the following is one of the factors of the polynomial
RUDIKE [14]

Answer:

5x-2

Step-by-step explanation:

15x^2-x-2

15x^2+5x-6x-2

factorize

5x(3x+1)-2(3x+1)

Sol: (3x+1)*(5x-2)

7 0
2 years ago
Question is in photo.<br> Thanks
lana66690 [7]

Answer:

what do you mean for this question. What do you need help on?

7 0
3 years ago
I need help QUICKLY on this algebra question!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Luda [366]

Answer:

x = -1

Step-by-step explanation:

to find axis of symmetry, use the following equation:

x = -b/2a

in this problem, a = 3, b = 6, c = -12

x = -6/2(3)

x = -6/6

x = -1

8 0
2 years ago
How to solve 5/6y + 1 = -1/2y + 1/4
True [87]

Answer:

y= -1/4

y= -0.25

Step-by-step explanation:

5/6y+1= -1/2y+1/4

<em>Subtract 1 from both sides</em>

5/6y= -1/2y-3/4

<em>Add 1/2y to both sides</em>

1 1/3y= -3/4

<em>Divide both sides by 1/3</em>

y= -1/4

y= -0.25

6 0
3 years ago
Other questions:
  • Need help ASAP please and thank you
    15·1 answer
  • Which are the solutions to the quadratic equation 4x^2=64?
    15·1 answer
  • given the following polynomial find the maximum possible number of turning points. f(x)=x^14 x^6 x^9 x^3
    5·1 answer
  • PLEASE HELP ME!!!!!!!!
    13·1 answer
  • Need help please please someone help me
    14·2 answers
  • What is the 4th term of the expanded binomial (2x – 3y)^6
    14·1 answer
  • Two supporting reasons are missing from the proof. Complete the proof by dragging and dropping the appropriate reasons into each
    7·1 answer
  • Choose the expression that is equivalent to the expression shown below.
    9·1 answer
  • Which of the following numbers of replications of an experiment would make
    14·2 answers
  • Please help asap<br><br><br>6<br><br>9<br><br>18
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!