Question
In: Statistics and Probability
Professor Galant has been conducting a study on the relationship between happiness and chocolate consumption. In her...
| Professor Galant has been conducting a study on the relationship between happiness and chocolate consumption. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| In her study, she selects 15 caouples pairs and evaluates the change in happiness, on a scale of 1 to 100, after eating a chocolate bar | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| She hired you as a statistical consultant. Analyze these data and draw the most reasonable conclusion(s) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| What scientific question(s) are you trying to answer? | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| What statistical method(s) have you used, and why? | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| List your null hypotheses and alternate hypotheses, if any. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Put any important values such as test statistics, p-values etc, here: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Why would it be difficult to double blind this study? | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Solutions
orchestra answered 2 years agoRelated Solutions
A paper describes a study that investigated the relationship between depression and chocolate consumption. Participants in...
A paper describes a study that investigated the relationship
between depression and chocolate consumption. Participants in the
study were 931 adults who were not currently taking medication for
depression. These participants were screened for depression using a
widely used screening test. The participants were then divided into
two samples based on the score on the screening test. One sample
consisted of people who screened positive for depression, and the
other sample consisted of people who did not screen positive for...
Pregnant women were recruited during their first trimester to study the relationship between chocolate consumption during...
Pregnant women were recruited during their first trimester to
study the relationship between chocolate consumption during
pregnancy and risk of preeclampsia (pregnancy-induced
hypertension). They were interviewed about chocolate consumption,
age, race, education, smoking, body mass index, and previous
pregnancy history. Participants were re-interviewed after delivery
to obtain information on chocolate consumption during the third
trimester of pregnancy. In addition, umbilical cord blood was
collected at the time of delivery and measured for concentration of
theobromine (the major metabolite of chocolate)....
You are conducting a study to determine if there is a relationship between annual household income...
You are conducting a study to determine if there is a
relationship between annual household income and a high school
student’s GPA. The school district you are studying is diverse and
lower income. a) Before you conduct the study, do you expect there
to be an association between these two variables? Why or why not?
Which should be the explanatory variable? b) You collect data from
a random sample of 15 students. The first row of the table is
household...
You are conducting a study to determine if there is a relationship between annual household income...
You are conducting a study to determine if there is a
relationship between annual household income and a high school
student’s GPA. The school district you are studying is diverse and
lower income.
a) Before you conduct the study, do you expect there to be an
association between these two variables? Why or why not? Which
should be the explanatory variable?
b) You collect data from a random sample of 15 students. The
first row of the table is household...
The Mean Corporation has been commissioned to conduct a study is into the relationship between the...
The Mean Corporation
has been commissioned to conduct a study is into the relationship
between the population of a city and the number of motor vehicle
accidents in the city per year. A linear regression model is to be
constructed. In the proposed regression model, number of motor
vehicle accidents per year is the response variable and population
of the city is the explanatory variable.
A random sample of 20
cities is selected and measurements are observed.
Population
('000s)
No....
Exercise 15-59 Static A sociologist wishes to study the relationship between happiness and age. He interviews...
Exercise 15-59 Static
A sociologist wishes to study the relationship between happiness
and age. He interviews 24 individuals and collects data on age and
happiness, measured on a scale from 0 to 100.
DATA:
Age
Happiness
49
62
51
66
41
67
65
71
84
87
41
60
83
86
18
78
36
59
61
63
15
77
86
90
73
70
32
62
84
93
23
72
52
58
72
73
63
63
30
66
72
78
47
60...
Q12: The following data are from a study of the relationship between average consumption of saturated...
Q12: The following data are from a study of the
relationship between average consumption of saturated fat (in
grams) and cholesterol level (in milligram per hundred milliliters)
of eight males:
Subject
1
2
3
4
5
6
7
8
Fat consumption (x)
55
65
50
34
43
58
72
36
Cholesterol level (y)
180
215
195
165
170
204
235
150
Below are some of the summaries of this data:
∑?=413, ∑?=1514, ????=1277.875, ????=5591.5 and ????=2536.75
(a) Compute the estimates...
A scientist is conducting a statistical study on the relationship between the ages versus seat-belt usage....
A scientist is conducting a statistical study on the
relationship between the ages versus seat-belt usage. The result is
illustrated as the following table.
18-29
30-49
50-64
65 and over
Total
Wear Seat Belts
51
63
51
28
Don’t Wear Seat Belts
14
7
4
12
Total
According to the above two-way contingency table, do we have
enough evidence to conclude that ages is not related to seat-belt
usage at 10% significance level?
Researchers are interested in conducting an observational study investigating the relationship between hepatitis C and early...
Researchers are interested in conducting an observational study
investigating the relationship between hepatitis C and early
mortality in HIV positive patients. The following table represents
the findings from the study after a follow-up time period of 15
years.
Deceased
Not Deceased
Total
Hepatitis C +
421
348
769
Hepatitis C -
425
820
1245
Total
846
1168
2014
1) What is the mortality rate in the exposed group
and unexposed group?
Exposed: 0.5475; unexposed: 0.3414
None of the other choices...
A marketing research firm wishes to study the relationship between wine consumption and whether a person...
A marketing research firm wishes to study the relationship
between wine consumption and whether a person likes to watch
professional tennis on television. One hundred randomly selected
people are asked whether they drink wine and whether they watch
tennis. The following results are obtained:
Watch
Tennis
Do Not
Watch Tennis
Totals
Drink Wine
6
49
55
Do Not Drink Wine
14
31
45
Totals
20
80
100
(a) For each row and column total, calculate
the corresponding row or column...
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