17. Psychostimulant drugs (such as Ritalin) help children with ADHD focus better on classroom material researcher wonders whether Ritalin might also influence children's ability to engage in productive social interactions. She selects 6 children who are newly diagnosed with ADHD. During one week, participants receive Ritalin, and during another week, the same participants receive a placebo. Their classroom teacher rates their social skill at the end of each week (data are shown below; higher scores indicate better social interactions). Consider the appropriate test for this question and answer Parts a-d. Note: you do NOT need to calculate means, standard deviations or the test statistic!! Child 1 2 3 4 5 6 Mean SD Social score for Ritalin week (points) 23 12 15 20 21 19 18.33 points 4.08 pts Social score for Placebo week (points) 18 18 5 16 22 11 15.00 points 6.07 pts (b) What is the null hypothesis in symbols? Note that you do NOT need to (and SHOULD NOT) calculate the means, test statistic, standard deviations, etc. in this problem. Relevant information is provided below. (c) What is the critical value of the test statistic? (alpha= .05, two-tailed) (d) Assume the value of your obtained test statistic is 1.38. State the decision and conclusion, including any appropriate statistical language.
17. Psychostimulant drugs (such as Ritalin) help children with ADHD focus better on classroom material researcher wonders whether Ritalin might also influence children's ability to engage in productive social interactions. She selects 6 children who are newly diagnosed with ADHD. During one week, participants receive Ritalin, and during another week, the same participants receive a placebo. Their classroom teacher rates their social skill at the end of each week (data are shown below; higher scores indicate better social interactions). Consider the appropriate test for this question and answer Parts a-d. Note: you do NOT need to calculate means, standard deviations or the test statistic!! Child 1 2 3 4 5 6 Mean SD Social score for Ritalin week (points) 23 12 15 20 21 19 18.33 points 4.08 pts Social score for Placebo week (points) 18 18 5 16 22 11 15.00 points 6.07 pts (b) What is the null hypothesis in symbols? Note that you do NOT need to (and SHOULD NOT) calculate the means, test statistic, standard deviations, etc. in this problem. Relevant information is provided below. (c) What is the critical value of the test statistic? (alpha= .05, two-tailed) (d) Assume the value of your obtained test statistic is 1.38. State the decision and conclusion, including any appropriate statistical language.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Transcribed Image Text:9:27 PM Thu Apr 6
<
no
BEE
a
Child
1
2
3
4
6
5
17. Psychostimulant drugs (such as Ritalin) help children with ADHD focus better on classroom material. But a
researcher wonders whether Ritalin might also influence children's ability to engage in productive social
interactions. She selects 6 children who are newly diagnosed with ADHD. During one week, participants receive
Ritalin, and during another week, the same participants receive a placebo. Their classroom teacher rates their
social skill at the end of each week (data are shown below; higher scores indicate better social interactions).
Consider the appropriate test for this question and answer Parts a-d. Note: you do NOT need to calculate
means, standard deviations or the test statistic!!
Homework 6
Mean
SD
Social score for
Ritalin week
(points)
23
12
15
20
21
19
18.33 points.
4.08 pts
Untitled (Draft)
Social score for
Placebo week
(points)
18
18
5
16
22
11
15.00 points
6.07 pts
A) (b) What is the null hypothesis in symbols?
T
n
Untitled (Draft)
-
□
Note that you do NOT need to (and
SHOULD NOT) calculate the means, test
statistic, standard deviations, etc. in this
problem. Relevant information is
provided below.
(c) What is the critical value of the test statistic? (alpha= .05, two-tailed)
C) (d) Assume the value of your obtained test statistic is 1.38. State the decision and conclusion, including any
appropriate statistical language.
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