Question
In: Statistics and Probability
A researcher wishes to determine whether there is a relationship between the Campus at which SACAP...
A researcher wishes to determine whether there is a relationship between the Campus at which SACAP students are based and their statistics anxiety level. The results of the subsequent survey are given in the following table:
| Campus | Low | Medium | High | Total |
|---|---|---|---|---|
| Online | 13 | 30 | 67 | |
| Cape Town | 58 | 70 | 22 | |
| Johannesburg | 26 | 34 | 30 | |
| Total |
Perform an appropriate hypothesis test at α = 0.01. If a significant result is obtained, determine the strength of the relationship. Show all four decision making steps.
Solutions
Expert Solution
The following cross tablulation have been provided. The row and column total have been calculated and they are shown below:
| Column 1 | Column 2 | Column 3 | Total | |
| Row 1 | 13 | 30 | 67 | 110 |
| Row 2 | 58 | 70 | 22 | 150 |
| Row 3 | 26 | 34 | 30 | 90 |
| Total | 97 | 134 | 119 | 350 |
orchestra answered 1 year agoRelated Solutions
A researcher wants to determine whether there is a relationship between age and mode of shopping....
A researcher wants to determine whether there is a relationship
between age and mode of shopping. In a random sample of 18- to
21-year-olds, 140 of 185 people shopped online more often than in
stores. In a random sample of 40- to 43-year-olds, 90 of 155 shops
online more often than in stores. What is the margin of error for a
95% confidence interval for the difference between the proportions
of shoppers in these age groups who shop online more...
An emergency service wishes to determine whether a relationship exists between the outside temperature and the...
An emergency service wishes to determine whether a relationship
exists
between the outside temperature and the number of emergency calls
it receives
for a 7-hour period. The data are shown. (25 points)
Temperature x 25 10 27 30 33
No. of calls y 7 4 8 10 11
a) Find the correlation coefficient r (If you use any software or
online calculator, please
take the screenshot. You will get extra points if you do by
hand.)
b) Find the regression...
A researcher is trying to determine the relationship between heights and weights of individuals. Which of...
A researcher is trying to determine the relationship between
heights and weights of individuals. Which of the following
statistical tools would be most appropriate to aid in this
study?
none of the other answers are correct
a box plot
the least-squares regression line
a joint frequency table
a pie chart
The ministry of Health wishes to determine if there is a relationship between the number of...
The ministry of Health wishes to determine if there is a
relationship between the number of cigarettes smoked daily and life
time health care costs The result of six sample smokers is recorded
below.
Number of Cigarettes
Health Costs (in thousands$)
30
43
40
45
50
54
60
53
70
56
80
63
Calculate the correlation coefficient
Test is the correlation coefficient is different from zero (.01
level)
Create the Ordinary Least Squares regression line
Discuss the assumptions that you...
In a random sample of patients with oropharyngeal cancer ; the researcher wishes to determine if there is a relationship between gender and the type of oropharyngeal cancer .
In a random sample of patients with oropharyngeal
cancer ; the researcher wishes to determine if there is a
relationship between gender and the type of oropharyngeal cancer .
The study has an alpha of 0.05 and a P value = 0.01.Question 1:what is the dependent variable?Q2; what would be an appropriate test for testing for
null hypothesis? Explain?Q3 : what decision should be made about the null
hypothesis? Explain?Q4 : If this decision is not correct , what potential...
A researcher wishes to determine whether the blood pressure of vegetarians is, on average, lower than...
A researcher wishes to determine whether the blood pressure of
vegetarians is, on average, lower than the blood pressure of
nonvegetarians. Independent simple random samples of 85 vegetarians
and 75 nonvegetarians yielded the following sample statistics for
systolic blood pressure:
Vegetarians
n1= 85
= 124.1 mmHg
s1 = 38.7 mmHg
Nonvegetarians
n2 = 75
= 138.7 mmHg
s2 = 39.2 mmHg
Use a significance level of 0.01 and P-value method to test the
claim that the mean systolic blood pressure...
A researcher wishes to examine the relationship between wage earned and educational level of workers. For...
A researcher wishes to examine the relationship between wage
earned and educational level of workers. For a sample of 4000
workers she has data on hourly earnings (measured in Dollar), age
of the worker (in years), worker’s gender, years of experience,
number of years with the present employer, size of the firm in
which the worker is employed, and highest educational qualification
(with 4 classifications: no qualification, secondary school
certificate, bachelor degree or PhD)
Explain how you would set up...
A researcher wishes to examine the relationship between wage earned and educational level of workers. For...
A researcher wishes to examine the relationship between wage
earned and educational level of workers. For a sample of 4000
workers she has data on hourly earnings (measured in SAR), age of
the worker (in years), worker’s gender, years of experience, number
of years with the present employer, size of the firm in which the
worker is employed, and highest educational qualification (with 4
classifications: no qualification, secondary school certificate,
bachelor degree or PhD)
Explain how you would set up...
A researcher wishes to examine the relationship between wage earned and educational level of workers. For...
A researcher wishes to examine the relationship between wage
earned and educational level of workers. For a sample of 4000
workers she has data on hourly earnings (measured in SAR), age of
the worker (in years), worker’s gender, years of experience, number
of years with the present employer, size of the firm in which the
worker is employed, and highest educational qualification (with 4
classifications: no qualification, secondary school certificate,
bachelor degree or PhD)
Explain how you would set up...
A researcher wishes to examine the relationship between wage earned and educational level of workers. For...
A researcher wishes to examine the relationship between wage
earned and educational level of workers. For a sample of 4000
workers she has data on hourly earnings (measured in SAR), age of
the worker (in years), worker’s gender, years of experience, number
of years with the present employer, size of the firm in which the
worker is employed, and highest educational qualification (with 4
classifications: no qualification, secondary school certificate,
bachelor degree or PhD)
Explain how you would set up...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Part A. Post in a discussion forum on Moodle For Part A of Assessment 1, you...
- In a lava lamp, a waxy fluid (say ρ= 1225[kg/m3]) is surrounded by another fluid (say...
- Talk about the pros and cons to different pricing strategies (for example complex, hard to implement,...
- An organisation has employed two employees who are qualified with the relevant job experience needed for...
- Write a Java loop statement that prints count. Count begins with 1. It increments as multiples...
- What is a related party transaction? Provide examples of transactions that would be considered related-party transactions...
- Little TownLittle TownPizza bought a used Ford delivery van on January 2,20182018, for$ 21 comma 800$21,800....
ADVERTISEMENT