Question
In: Statistics and Probability
Female undergraduates in randomized groups of 10 took part in a self-esteem study. The study measured...
Female undergraduates in randomized groups of 10 took part in a self-esteem study. The study measured an index of self-esteem from the point of view of competence, social acceptance, and physical attractiveness. Let x1, x2, and x3 be random variables representing the measure of self-esteem through x1(competence), x2 (social acceptance), and x3 (attractiveness). Higher index values mean a more positive influence on self-esteem.
| Variable | Sample Size | Mean x | Standard Deviation s | Population Mean |
| x1 | 10 | 20.25 | 3.27 | μ1 |
| x2 | 10 | 19.41 | 3.35 | μ2 |
| x3 | 10 | 17.07 | 3.74 | μ3 |
(a) Find a 90% confidence interval for μ1 − μ2. (Round your answers to two decimal places.)
| lower limit | |
| upper limit |
(b) Find a 90% confidence interval for μ1 −
μ3. (Round your answers to two decimal
places.)
| lower limit | |
| upper limit |
(c) Find a 90% confidence interval for μ2 −
μ3. (Round your answers to two decimal
places.)
| lower limit | |
| upper limit |
Solutions
orchestra answered 1 year agoRelated Solutions
Female undergraduates in randomized groups of 10 took part in a self-esteem study. The study measured...
Female undergraduates in randomized groups of 10 took part in a
self-esteem study. The study measured an index of self-esteem from
the point of view of competence, social acceptance, and physical
attractiveness. Let x1, x2, and x3 be random variables representing
the measure of self-esteem through x1 (competence), x2 (social
acceptance), and x3 (attractiveness). Higher index values mean a
more positive influence on self-esteem. Variable Sample Size Mean x
Standard Deviation s Population Mean x1 10 19.62 3.41 μ1 x2...
Female undergraduates in randomized groups of 14 took part in a self-esteem study. The study measured...
Female undergraduates in randomized groups of 14 took part in a
self-esteem study. The study measured an index of self-esteem from
the point of view of competence, social acceptance, and physical
attractiveness. Let x1, x2,
and x3 be random variables representing the
measure of self-esteem through x1 (competence),
x2 (social acceptance), and
x3 (attractiveness). Higher index values mean a
more positive influence on self-esteem.
Variable
Sample Size
Mean x
Standard Deviation
s
Population Mean
x1
14
19.20
3.48
μ1
x2...
Childhood participation in sports, cultural groups, and youth groups appears to be related to improved self-esteem...
Childhood participation in sports, cultural groups, and youth
groups appears to be related to improved self-esteem for
adolescents (McGee, Williams, Howden-Chapman, Martin, &
Kawachi, 2006). In a representative study, a sample of n = 100
adolescents with a history of group participation is given a
standardized self-esteem questionnaire. For the general population
of adolescents, scores on this questionnaire form a normal
distribution with a mean of u = 50 and a standard deviation of 15 .
The sample of group...
Childhood participation in sports, cultural groups, and youth groups appears to be related to improved self-esteem...
Childhood participation in sports, cultural groups, and youth
groups appears to be related to improved self-esteem for
adolescents (McGee, Williams, Howden-Chapman, Martin, &
Kawachi, 2006). In a representative study, a sample of n = 100
adolescents with a history of group participation is given a
standardized self-esteem questionnaire. For the general population
of adolescents, scores on this questionnaire form a normal
distribution with a mean of u = 50 and a standard deviation of 15 .
The sample of group...
Childhood participation in sports, cultural groups, and youth groups appears to be related to improved self-esteem...
Childhood participation in sports, cultural groups, and youth
groups appears to be related to improved self-esteem for
adolescents. In a representative study, a sample of n=100
adolescents with a history of group participation is given a
standardized self-esteem questionnaire. For the general population
of adolescents, scores on this questionnaire form a normal
distribution with a mean of μ=40 and a standard deviation of σ=12.
The sample of group-participation adolescents had an average of
M=43.84.
a. Does this sample provide enough...
Childhood participation in sports, cultural groups, and youth groups appears to be related to improved self-esteem...
Childhood participation in sports, cultural groups, and youth
groups appears to be related to improved self-esteem for
adolescents(McGee, Williams, Howden-Chapman, Martin & Kawachi,
2006). In a representative study, a sample of n = 100 adolescents
with a history of group participation is given a standardized
self=esteem questionnaire. For th e general population of
adolescents, scores on this questionnaire form a normal
distribution with a mean of μ = 50 and a standard deviation of σ =
15. The sample of...
Does participation in sports, cultural groups, and youth groups improve self esteem for adolescents? What do...
Does participation in sports, cultural groups, and youth groups
improve self esteem for adolescents? What do you think? A study
done by McGee et al. (2006) claims that involvement in these groups
does improve self-esteem.
Following the steps for statistical hypothesis testing, you
embark on an independent investigation.
For your study, you have randomly selected 100 adolescents with
a history of group participation and give them a standardized
self-esteem questionnaire. The sample of group-participation
adolescents scored a mean of 46.1...
You are a nurse working in a distress center and would like to study the self-esteem...
You are a nurse working in a distress center and would like to
study the self-esteem of domestic violence victims. You would like
to know if self-esteem is associated with education level. You know
from the existing literature that self-esteem scores are generally
normally distributed with homogeneous variance across education
groups. The table below shows the data that you collected for a
random sample of clients that recently visited your center. Let the
probability of committing a type I error...
A researcher interested in a relationship between self-esteem and depression conducted a study on undergraduate students...
A researcher interested in a relationship between self-esteem
and depression conducted a study on undergraduate students and
obtained a Person correlation of r = - 0.32, n = 25, p > .05
between these two variables. Based on this result the correct
conclusion is _______.
A. reject null hypothesis; there is a significant negative
correlation between self-esteem and depression.
B. reject null hypothesis; there is no significant correlation
between self-esteem and depression.
C. fail to reject null hypothesis; there is...
4. (22 pts) A psychologist conducts a study to determine the relationship between religion and self-esteem....
4.
(22 pts) A psychologist conducts
a study to determine the relationship
between religion and self-esteem. Ten
eighth graders are randomly
selected for the study. Each
individual undergoes two tests, one measuring
self-esteem and the other religious
involvement. For the self-esteem test,
a higher score indicates higher
self-esteem; for the test measuring
religious involvement, a higher the
score indicates higher religious involvement. The self-esteem test
has a range from 1 to 10 and the religious involvement test ranges
from 0...
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