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
USPshnik [31]
3 years ago
12

Alisha is conducting a paired differences test for a "before (B score) and after (A score)" situation. She is interested in test

ing whether the average of the "before" scores is higher than that of the "after" scores.
(a) To use a right-tailed test, how should Alisha construct the differences between the "before" and "after" scores?
(b) To use a left-tailed test, how should she construct the differences between the "before" and "after" scores?
Mathematics
1 answer:
madreJ [45]3 years ago
5 0

Answer:

Step-by-step explanation:

The question says that Alisha is interested in testing whether the average (mean) of the B scores is GREATER THAN the average of the A scores.

Normally, a right-tailed test is used to conduct such experiment because Alisha is comparing in the positive - greater than.

Since we weren't given any figures in the question, we'll use algebra.

Hence,

Let the mean of the B scores be X

and the mean of the A scores be Y

(A) In this case, Alisha wants to know if X is greater than Y. She'll construct the difference between both means thus:

Null hypothesis: X is greater than Y

Alternative hypothesis: X is not greater than Y

Remember that the null hypothesis is the fact which the researcher is testing or which he/she wants to ascertain or prove WHILE the alternative hypothesis is the negating event.

(B) For a left-tailed test to be conducted, Alisha's research statement will be rephrased thus:

Alisha is interested in testing whether the average of the A scores is LESS THAN the average of the B scores.

The hypothesis statement will now be:

Null hypothesis: Y is less than X

Alternative hypothesis: Y is not less than X

As the distinction between both types of hypothesis test has been established, in each case, succeeding statistical-analysis steps are the same.

Alisha can then perform her regression analysis with the numerical data given.

You might be interested in
Solve 3(3×2) in a rectangular array ​
nikklg [1K]

Answer: 18

Step-by-step explanation:

3(3)(2)

=(3)(6)

=18

5 0
2 years ago
Read 2 more answers
Can someone help me with question d and e and explain
Bas_tet [7]
D. X cubed
E. X to the negative 3
4 0
3 years ago
Seven times a number is the same as 12 more than 3 times the number. find the number
Arada [10]
7x=12+3x
-3x. -3x
4x=12
x=3
6 0
3 years ago
Read 2 more answers
I want to divid 18 divided by 5
user100 [1]

Answer:

The answer is 3.6

7 0
3 years ago
Read 2 more answers
A cylindrical stool has a base of diameter 70cm and height 25cm.find the cost of painting 50 such atools.,if the cost per m2 is
Talja [164]
It would be 32cm because the diameter corresponding
6 0
3 years ago
Other questions:
  • Lashonda bought n packs of pencils. each pack has 12 pencils. write an equation to represent the total number of pencils p that
    10·2 answers
  • Help pls with number seven :3
    15·2 answers
  • Gwyneth begins solving for x in the equation 2(x-4)=5(4-2x)+4x. After applying the distributive property and combining like term
    13·2 answers
  • A. Cumberland And Lincoln <br> B.lincoln and ocean <br> C.Lincoln and summit <br> D.Ocean and Summit
    7·1 answer
  • Please answer this IS MY TEST PLEASE ANSWER PLEASE dont give UP-_-
    7·1 answer
  • The punch has 7 1/2 gallons of juice mix for every 1 1/4 gallons of fresh fruit juice. How many gallons of juice mix are used pe
    6·1 answer
  • Y= 10x - 32 what is the x and y value of this equation
    12·1 answer
  • Find the value when x = 2 and y = 3. 2x 0 y -2
    12·1 answer
  • True or False? The quotient to this expression is negative 9/10 ÷ (−6/12) (9/10 and 6/12 are fractions.)
    7·1 answer
  • Put this number into scientific notation: 80,000,000,000
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!