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
Temka [501]
3 years ago
13

Say youre going to conduct a t procedure for the difference between the means of two populations. You decide the samples of size

s 12 and 15 are independent. Which of the following statements are true?
1. If we pool variances the number of degrees of freedom is 25.
2. If we don't pool and we don't have access to software to compute the degrees of freedom the number of degrees of freedom is 11.
3. For a given level of confidence c a confidence interval based on 11 degrees of freedom will be wider than one based on 25 degrees of freedom.
Mathematics
1 answer:
stiv31 [10]3 years ago
6 0

Answer:

all 3 are correct.

I

II

III

you're welcome

You might be interested in
What is the value of the expression <br> 3<br> 6 - (- 11.5)?<br> 4
Digiron [165]

Answer: 31 hope this helped

Step-by-step explanation: I'm assuming your problem looks like this: 4+5*6-3 =? To solve this problem you need to use the order of operations. PEMDAS which stands for Parentheses, exponents, multiply and divide, and lastly add and subtract. You must multiply and divide before you add and subtract so you must do 5*6 first. You now get 4+30-3. Now all you have left is addition and subtraction so you now just go from right to left and do one at a time. So 4+30 = 34 , 34-3=31. Therefore your answer should be 31. Hope that helped!

8 0
3 years ago
Which of the equations below could be the equation of this parabola?
Aleonysh [2.5K]

Answer:

C. x=-3y^2

Step-by-step explanation:

The group of parabola opens left so, x=ay^2

parabola opens left so a in negative x=-3y^2

Hope it helps....

8 0
3 years ago
FIRST TO ANSWER GET BRAINLEST.
Lostsunrise [7]

Answer:

I believe the answer is B sorry if I'm wrong

3 0
3 years ago
Find the value of x that will make A||B<br> 9x + 4<br> 5x + 20<br> x = [?]
mrs_skeptik [129]

9x + 4= 5x + 20 (alternate interior angles)

9x-5x =20-4

4x = 16

x= 16/4

x= 4

4 0
3 years ago
Read 2 more answers
Express 3cm: 3m in the ratio of its simplest form​
Dmitry_Shevchenko [17]

Answer:

1cm:100cm

Step-by-step explanation:

You have to convert the ratio into the same unit (I chose cm). If there are 100cm in a metre, there will be 300cm in 3m.

That leaves you with the ratio 3cm:300cm. To simplify, divide both sides by three leaving you with 1cm:100cm

3 0
3 years ago
Read 2 more answers
Other questions:
  • On a map, 12 inch represents 45 mile.
    6·2 answers
  • Factor 8q^2 + 3m + 4qm + 6q=
    14·1 answer
  • What is the difference of the values of the two variables in this system of equations? y = 2x + 1 x + 3y = 10 A. 0 B. 1 C. 2 D.
    6·2 answers
  • Douglas invests money in two simple interest accounts. He invests three times as much in an account paying 14% as he does in an
    10·2 answers
  • A cookie place uses 1/10 flour in each batch of cookies.the factory used 1/2 yesterday
    8·1 answer
  • Find the minimum of the data set.
    9·1 answer
  • Α<br> 34°<br> Help me ASAP Thxx
    14·1 answer
  • PLEASE HELP GIVING BRAINLEST PLEASE 30 POINTS
    14·1 answer
  • pls help me giving brainless. find all angle measures. Assume each truss is symmetric. All of the roofs have a total top peak an
    14·2 answers
  • Pls help ASAP I need it in 10 mins
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!