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
PIT_PIT [208]
3 years ago
6

An independent research firm conducted a study of 100 randomly selected children who were participating in a program advertised

to improve mathematics skills. The results showed no statistically significant improvement in mathematical skills, using a significance level of 0.05. The program is effective, which of the following would be an appropriate method for increasing power in this context?
a. Increase the sample size to 200 children.
b. Use a two-sided test instead of a one sided test.
c. Decrease the sample size.
d. Use alpha-0.01 instead of a-alpha.
e. Use a one sided test instead of a two-sided test.
Mathematics
1 answer:
kap26 [50]3 years ago
7 0

Answer:

b) use a two-sided test instead of a one sided test.

Step-by-step explanation:

If we are using a significance level of 0.05, then the two-tailed test assigns half alpha to test for statistical significance in one direction and half alpha to test statistical significance in the other direction. This implies that .025 is present in each tail of the test statistical distribution. When using the two-tailed test, regardless of the direction of the relationship you assume, we test the possibility of the relationship in both directions.

You might be interested in
Given f(x) = 2x – 6, find f( – 4).
SOVA2 [1]

Answer:

f(-4) = -14

Step-by-step explanation:

f(x) = 2x – 6

Let x = -4

f(-4) = 2*-4 -6

f(-4) = -8-6

f(-4) = -14

4 0
3 years ago
Read 2 more answers
Which ratio is equivalent to 50/90
max2010maxim [7]
The answer is 687 ratio
6 0
3 years ago
How to solve a negative number in Pendas
shtirl [24]
What is Pendas in this sentence did you mean PEMDAS


7 0
3 years ago
If I can run 5 miles per hour, how far is this in feet per hour?
stiv31 [10]

Answer:

26,400 feet is 5 miles, so 5,280 fph.

Step-by-step explanation:

1 foot is equal to 0.000164 mile.

If you need an explanation, let me know. Hope this helps!!

4 0
2 years ago
Read 2 more answers
6. How do you find the slope of a line?
S_A_V [24]

Answer:

D

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • HELP please! In an attempt to determine the favorite sport of people in the city, Marcos surveys every tenth person exiting a ba
    12·1 answer
  • Someone know the answer ??<br>If you know , Can you help me, please ???
    13·1 answer
  • Find the value of this expression if x = -7.<br> x2 - 1
    5·2 answers
  • 4a + 7b + 3a – 2b + 2a
    9·1 answer
  • Which is the graph of y=[x]-2?
    13·1 answer
  • The play director spent 190 190190 hours preparing for a play. That time included attending 35 3535 rehearsals that took varying
    15·1 answer
  • Please help me!! Picture attached!!
    12·2 answers
  • Plssss HELP MEEEEEE<br> i shall give thanks
    13·2 answers
  • Some one help me pls
    5·1 answer
  • Help pls!?!?!?!!! This is algebra 2
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!