Question

Problem 22 – use the data in the following table to perform the significant test:

Participants |
n |
Mean |
SS |

Exercise Group |
16 |
23 |
104 |

Control Group |
16 |
20 |
160 |

a. Does the music-based physical training improve balance and walking efficiency? (one-tailed tests, α =.05) Show all 4 steps of hypothesis testing.

b. Calculate r^{2} to measure effect size for the mean
difference.

Answer #1

Questions 7 to 13 are based on the following problem A
researcher used a sample of n =16 adults between the ages of 40 and
45. For each person, the researcher recorded the difference between
the ratings obtained while smiling and the rating obtained while
frowning. On average the cartoons were rated as funnier when the
participants were smiling, with an average difference of MD = 1.6,
with SS = 135. Are the cartoons rated as significantly funnier when
the...

Use MegaStat, MINITAB, or another software package to perform
Tukey’s test for significant pairwise differences. Perform the test
using both the 5 percent and 1 percent levels of
significance.
One particular morning, the length of time spent in the examination
rooms is recorded for each patient seen by each physician at an
orthopedic clinic.
Time in Examination Rooms (minutes)
Physician 1
Physician 2
Physician 3
Physician 4
35
34
19
28
22
37
30
32
29
30
31
31
31...

Use MegaStat, MINITAB, or another software package to perform
Tukey’s test for significant pairwise differences. Perform the test
using both the 5 percent and 1 percent levels of
significance.
Sales of People magazine are compared over a 5-week period
at four Borders outlets in Chicago.
Weekly Sales
Store 1
Store 2
Store 3
Store 4
99
97
90
103
108
79
91
117
105
82
74
87
114
82
108
101
112
101
93
98
(a) Calculate the mean for...

1a)
A researcher conducts an independent-measures study to examine
how the brain chemical serotonin is related to aggression. One
sample of rats serves as a control group and receives a placebo
that does not affect normal levels of serotonin. A second sample of
rats, low serotonin group, receives a drug that lowers brain levels
of serotonin. Then, the researcher tests the animals by recording
the number of aggressive responses each of the rats display. See
the data below. Is there...

A therapist was interested in determining whether patients
experiences reduced anxiety following diaphragmatic breathing
exercises. She includes 9 participants in her brief study. Each
patient provides a rating for current anxiety, on a scale of 1
(least anxiety) to 10 (extreme anxiety). She then instructs them on
a 45-minute diaphragmatic breathing exercise. Following the
exercise, each patient again rates his/her anxiety on the same 1-10
scale. (Note that this is a repeated measures study because each
patient/participant is measured twice,...

PUBH 6033—Week 7 Assignment 1
Comparing two means: When drink drove a student to
statistics
(Rubric included)
Instructions
For this assignment, you review this week’s Learning Resources
and then perform a two-sample independent t test and an ANOVA
related to the dataset that was utilized in the week 2 SPSS
application assignment. Import the data into SPSS; or, if you
correctly saved the data file in Week 2, you may open and use that
saved file to complete this...

PUBH 6033—Week 7 Assignment 1
Comparing two means: When drink drove a student to
statistics
(Rubric included)
Instructions
For this assignment, you review this week’s Learning Resources
and then perform a two-sample independent t test and an ANOVA
related to the dataset that was utilized in the week 2 SPSS
application assignment. Import the data into SPSS; or, if you
correctly saved the data file in Week 2, you may open and use that
saved file to complete this assignment....

What tools could AA leaders have used to increase their
awareness of internal and external issues?
???ALASKA AIRLINES: NAVIGATING CHANGE
In the autumn of 2007, Alaska Airlines executives adjourned at
the end of a long and stressful day in the
midst of a multi-day strategic planning session. Most headed
outside to relax, unwind and enjoy a bonfire
on the shore of Semiahmoo Spit, outside the meeting venue in
Blaine, a seaport town in northwest
Washington state.
Meanwhile, several members of...

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