Question
In: Statistics and Probability
Part II. Student’s t-Test 2. A research study was conducted to examine the differences between older...
Part II. Student’s t-Test 2. A research study was conducted to examine the differences between older and younger adults on perceived life satisfaction. A pilot study was conducted to examine this hypothesis. Ten older adults (over the age of 70) and younger adults (between 20 and 30) were given a life satisfaction test. Scores on the measure range from 0-60 with high scores indicative of high life satisfaction.
Older Adults Younger Adults
45 34
38 22
52 15
48 27
25 37
39 41
51 24
46 19
55 26
46 36
Sample 1 Mean = 44.50 Sample 2 Mean = 28.10 Sample 1 SD = 8.68 Sample 2 SD = 8.54 Sample 1 N = 10 Sample 2 N = 10
a. Write out the null and research hypothesis for the above question.
b. Calculate the t value.
c. What is the critical value for t?
d. Is there a significant difference between the two groups?
e. What probability level did you choose and why?
f. Interpret your answer.
Solutions
orchestra answered 1 year agoRelated Solutions
4. A research study was conducted to examine the differences between older and younger adults on...
4. A research study was conducted to examine the differences
between older and younger adults on perceived life satisfaction. A
pilot study was conducted to examine this hypothesis. Ten older
adults (over the age of 70) and ten younger adults (between 20 and
30) were give a life satisfaction test (known to have high
reliability and validity). Scores on the measure range from 0 to 60
with high scores indicative of high life satisfaction; low scores
indicative of low life...
. A study was conducted to examine the correlation between number of study hours and students...
. A
study was conducted to examine the correlation between number of
study hours and students grads in exam. Study hours for students:
2, 3, 5, 6, 8, 10, 10, 2, 5, 6, 5, 3, 7, 6, 2, 7, 6, 8, 2, 5 Grads
in exam for students: 3, 4, 6, 7, 8, 10, 9, 8, 3, 6, 5, 4, 6, 6, 3,
7, 6, 3, 4, 5 1- as ungrouped data find the frequency, accumulated
relative frequency, and accumulative...
. A study was conducted to examine the correlation between number of study hours and students...
. A
study was conducted to examine the correlation between number of
study hours and students grads in exam. Study hors for students: 2,
3, 5, 6, 8, 10, 10, 2, 5, 6, 5, 3, 7, 6, 2, 7, 6, 8, 2, 5 Grads in
exam for students: 3, 4, 6, 7, 8, 10, 9, 8, 3, 6, 5, 4, 6, 6, 3, 7,
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A research study was conducted to examine the impact of eating a high protein breakfast on...
A research study was conducted to examine the impact of
eating a high protein breakfast on adolescents' performance during
a physical education physical fitness test. The students were
randomly selected and half received a high protein breakfast and
half a low protein breakfast. All of the adolescents, both male and
female, were given a fitness test with high scores representing
better performance. Test scores are recorded below.
Group
High Protein
Low Protein
Males
9
8
8
10
7
8
7...
A research study was conducted to examine the impact of eating a high protein breakfast on...
A research study was conducted to examine the impact of
eating a high protein breakfast on adolescents' performance during
a physical education physical fitness test. The students were
randomly selected and half received a high protein breakfast and
half a low protein breakfast. All of the adolescents, both male and
female, were given a fitness test with high scores representing
better performance. Test scores are recorded below.
Group
High Protein
Low Protein
Males
9
8
8
10
7
8
7...
A research study was conducted to examine the clinical efficacy of a new antidepressant. Depressed patients...
A research study was conducted to examine the clinical efficacy
of a new antidepressant. Depressed patients were randomly assigned
to one of three groups: a placebo group, a group that received a
low dose of the drug, and a group that received a moderate dose of
the drug. After four weeks of treatment, the patients completed the
Beck Depression Inventory. The higher the score, the more depressed
the patient. The data are presented below
placebo low dose moderate dose
38...
A research study was conducted to examine the clinical efficacy of a new antidepressant. Depressed patients...
A research study was conducted to examine the clinical efficacy
of a new antidepressant. Depressed patients were randomly assigned
to one of three groups: a placebo group, a group that received a
low dose of the drug, and a group that received a moderate dose of
the drug. After four weeks of treatment, the patients completed the
Beck Depression Inventory. The higher the score, the more depressed
the patient. The data are presented below. Compute the appropriate
test.
Placebo
Low...
Part 1. Discuss the differences and similarities between Operations Research and Data Science. Part 2. What...
Part 1. Discuss the differences and similarities between
Operations Research and Data Science.
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Part II. Indicate whether you would perform a z test, two-sample t test, paired t test,...
Part II. Indicate whether you would perform a z
test, two-sample t test, paired t test, or ANOVA for the following
research question? All the outcomes are continuous
variables.
A group of adolescent boys was offered interpersonal skills
counseling and then tested in September and May to see if there was
any impact on family harmony.
3 groups of participants were exposed to different levels of
treatment for ankle sprain. Which treatment was more
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1 group of men was...
2) A study was conducted to determine whether there were significant differences between medical students admitted...
2) A study was conducted to determine whether there were
significant differences between medical students admitted through
special programs (such as retention incentive and guaranteed
placement programs) and medical students admitted through the
regular admissions criteria. It was found that the graduation rate
was 89.7% for the medical students admitted through special
programs. Be sure to enter at least 4 digits of accuracy for this
problem!
If 9 of the students from the special programs are randomly
selected, find the...
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