Question
In: Statistics and Probability
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?
Solutions
orchestra answered 2 years agoRelated Solutions
Results on seat belt usage from the 2003 Youth Risk Behavior Survey were published in a...
Results on seat belt usage from the 2003 Youth Risk Behavior
Survey were published in a USA Snapshot on January 13, 2005. The
following table outlines the results from the high school students
who were surveyed in the state of Nebraska. They were asked whether
or not they rarely or never wear seat belts when riding in someone
else's car. Using α = .05, does this sample present
sufficient evidence to reject the hypothesis that gender is
independent of seat...
1A) Results on seat belt usage from the 2003 Youth Risk Behavior Survey were published in...
1A) Results on seat belt usage from the 2003 Youth Risk Behavior
Survey were published in a USA Snapshot on January 13, 2005. The
following table outlines the results from the high school students
who were surveyed in the state of Nebraska. They were asked whether
or not they rarely or never wear seat belts when riding in someone
else's car. Using α = .05, does this sample present
sufficient evidence to reject the hypothesis that gender is
independent of...
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...
A recent study of seat belt use found that for a random sample of 117 female...
A recent study of seat belt use found that for a random sample
of 117 female Hispanic drivers in Boston; 68 were wearing seat
belts. Is this sufficient evidence to claim that the proportion of
all female Hispanic drivers in Boston who wear seat belts is
greater than 50%. Use a significance level of 5%.
This problem is about (circle the correct one):
One population
proportion
Two population
proportions
One population
mean
Two populations means (Independent samples)
One population standard...
You have been asked to study whether there is a statistical relationship between the region of...
You have been asked to study whether there is a statistical
relationship between the region of the country and the categorical
number of stores that have experienced at least a 20% return rate
of the item you are studying. Sample data concerning these two
variables is given in appendix three. At both the 5% and 2% levels
of significance, is there evidence of a relationship between the
region of the country and the categorical number of stores that
have experienced...
4. A statistical researcher wishes to investigate the relationship between a student’s study time and their...
4. A statistical researcher wishes to investigate the
relationship between a student’s study time and their ultimate exam
grade for that exam. The following data is determined:
X=study time(hours)
4
7
8
9
12
Y=exam grade (1 to 25 scale)
11
16
14
22
17
Ex=40
Ex2=354
and Exy=670
Ey=80 Ey2=1346
Sketch the scatter diagram. Does the trend appear to be
positive or negative?
given that E(x-xbar)2=34, Please use that comment to
help determine the sample standard deviation for the...
The National Center for Drug Abuse is conducting a study to determine if the heroin usage...
The National Center for Drug Abuse is conducting a study to
determine if the heroin usage among teenagers has changed.
Historically, about 1.3 percent of teenagers have used heroin one
or more times. In a recent study of 1800 teenagers, 35 said they
had used heroin one or more times. Is there significant evidence
that heroin usage among teenagers has changed? What concerns do you
have about this data?
A study of seat belt users and nonusers yielded the randomly selected sample data summarized in...
A study of seat belt users and nonusers yielded the randomly
selected sample data summarized in the accompanying table. Use a
0.05 significance level to test the claim that the amount of
smoking is independent of seat belt use. A plausible theory is that
people who smoke are less concerned about their health and safety
and are therefore less inclined to wear seat belts. Is this theory
supported by the sample data?
Number of Cigarettes Smoked per Day
0
1–14...
A study of seat belt users and nonusers yielded the randomly selected sample data summarized in...
A study of seat belt users and nonusers yielded the randomly
selected sample data summarized in the given table.
Number of cigarettes smoked per day
0 1-14 15 and over
Wear seat belts 185 30 50
Don't wear seat belts 155 25 55
At the 0.01 significance level, test the claim that the amount
of smoking is independent of seat belt use. Which of the following
is true?
Select one:
a. The expected value of the test statistics is 13.50...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Non-constant growth model: Do=$2.00 required return on equity= 5% g= 9% n=1,2 g=7% n=3,4 g=3% n=5...
- . Find all x ∈ Z143 such that x2Ξ 7 (mod 143). Please explain all steps...
- #Python: A palindrome is a sequence of characters that reads the same backwards as forwards. For...
- Explain an example in which a variable has two different addresses at different places in a...
- Hadley, a thirty-five-year-old physician, has worked at Princeton Plainsboro Hospital for six years. She recently received...
- QUESTION 1. For each of the following, state whether the occurrence of the variable x occurs...
- According to Mike Taft of RVK, the “Markets Group” is an important unit of the Federal...
ADVERTISEMENT