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
Art [367]
3 years ago
12

A teacher wants to see if a new unit on fractions is helping students learn. She has five randomly selected students take a pre-

test and a post test on the material. The scores are out of 20. Has there been improvement? (pre-post) What is the point estimate of the population mean difference between the pre and post test?

Mathematics
1 answer:
belka [17]3 years ago
6 0

Complete Question

The complete question is shown on the first uploaded image

Answer:

The correct option is

Step-by-step explanation:

From the question we told that

    The test statistics is  t =  0.72

     The number of student is n = 5

      The degree of freedom can be mathematically evaluated as

             D =  n- 1

=>         D =  5- 1 =  4

The p-value is mathematically evaluated as

        p-value =  p(T \le - |-0.72|)

using the z table(shown in second and third image ) we obtain that

        p-value =  0.2557

You might be interested in
Suppose you have 30CD's. You know that you have 11 more CD's than your friend. Write and solve an equation to find the number of
Serga [27]

Answer:

30 - 11 = 19        19 CD's

Step-by-step explanation:


4 0
3 years ago
Read 2 more answers
PLEASE HELP! I don’t understand
denpristay [2]

Answer:

(-1,0) and (5,0)

Step-by-step explanation:

The roots are the points where the y-value is 0 and the point lies exactly on the x-axis.

(blank,0)

In this parabola, the points that are exactly on the x-axis is (-1,0) and (5,0)

4 0
3 years ago
How do you simplify 1/5(10x-25)
kozerog [31]

Answer:2x-5


Step-by-step explanation:


4 0
3 years ago
Read 2 more answers
Order each set of integers from least to greatest; -55, 143, 18, -79, 44, 101
pickupchik [31]
-79, -55, 18, 44, 101, 143
3 0
3 years ago
Read 2 more answers
Use the sum of cubes identity to write this polynomial expression in factored form: 8x^3 + 27
babunello [35]

Answer:

hola, por que? si 8xup3 euqlieas tja gnaot nighar

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • The distance from Earth to the moon is 384,400 kilometers. What is this distance expressed in scientific notation?
    10·1 answer
  • Answer math question/show work
    13·1 answer
  • Please help thank you and show all work.
    11·1 answer
  • What number is 7 units to the left of -1?<br><br> a.6<br> b.-6<br> c.-8<br> d.8
    13·2 answers
  • What is Pi* 457363225452-485092526+2671251971947691
    14·1 answer
  • point C(4,2) divides the line segment joining points A(2,-1) and B(x,y), such that AC:CB=3.1. what are the coordinates of point
    9·1 answer
  • Susie Smith wants to know the amount by which her service charge has increased before she receives her bank statement. In the pa
    5·2 answers
  • May has 4 /15 meters of lace while Lovie has 2 /7 meter longer than May's lace. how many meters of lace do girls have together​
    10·1 answer
  • HELP ME THIS IS DUE IN A HOUR. <br> How many sit ups did Emily complete?<br> SORRY IF ITS BLURRY
    7·2 answers
  • Identify two segments that are marked parallel to each other on the diagram below. PLEASE ANSWER CORRECTLY !!!!!!!! WILL
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!