Question
A teachers’ union representative claims that there is a difference in the salaries earned by teachers...
A teachers’ union representative claims that there is a difference in the salaries earned by teachers in Ohio and Pennsylvania. A random sample of 12 Ohio and 12 Pennsylvania teachers and their salaries is shown in the table below. The salaries are reported in thousands of dollars.
Ohio Pennsylvania
42 47
45 66
50 44
47 52
44 49
51 54
42 69
51 65
45 56
37 51
59 44
36 34
a. Assuming normal distributions, is there enough evidence to support the representative’s claim at the 5% significance level?
b. What type of error could you be making with your conclusion in part a?
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
According to the National Education Assocition (NEA), teachers generally spend more than 40 hours each week...
According to the National Education Assocition (NEA), teachers
generally spend more than 40 hours each week working on
instructional duties. The following data show the number of hours
worked per week for a sample of 15 high school science teachers and
a sample of 14 high school English teachers
High school science teachers: 54 55 65 31 44 56 51 52 59 50 47
48 49 51 59
High school English teachers: 42 49 56 41 43 44...
Create a frequency distribution using age and male-yes. It's supposed to be a bar chart. Age...
Create a frequency distribution using age and male-yes. It's
supposed to be a bar chart.
Age
55
50
42
47
58
67
64
64
62
43
51
58
42
51
66
69
57
48
51
50
43
46
49
48
55
51
50
41
47
55
54
52
64
68
51
40
53
67
65
47
48
56
64
45
57
50
52
60
66
70
63
63
63
32
70
66
50
67
63
59
63
34
70
50...
2a. Describe the sample and population you are studying. I am studying customers' satisfaction level with...
2a. Describe the sample and population you are studying.
I am studying customers' satisfaction level with their
car insurance plan.
2b. Calculate the sample mean and sample standard deviation for
your variable. Keep at least four decimal places.
2c. Calculate the standard error and the margin of error for a 90%
confidence interval. Keep at least four decimal places.
Data:
36
18
66
43
28
39
47
40
24
46
48
57
36
58
39
62
43
65
74
36...
A magazine publishes restaurant ratings for various locations around the world. The magazine rates the restaurants...
A magazine publishes restaurant ratings for various locations
around the world. The magazine rates the restaurants for food,
modifying above with accentcor, service, and the cost per person.
Develop a regression model to predict the cost per person, based
on a variable that represents the sum of the three ratings. The
magazine has compiled the accompanying table of this summated
rating variable and the cost per person for 25 restaurants in a
major city. Complete parts (a) through (e) below....
You are a teacher of a group of 30 students and then take the test. 56 ...
You are a teacher of a
group of 30 students and then take the test.
56
50
45
42
33
34
42
55
58
51
50 48
34
42
48
49
30
25
22
44
56
52
48 49
48
40
45
51
47 39.
1. Organize the scores
into a simple frequency distribution.
2. Calculate the fashion
3. Calculate the median
4. Calculate the average
5. Calculate the Mean Deviation
6. Calculate the Standard Deviation of the scores...
Please compute the value, upper control limit, and lower control limit for the x-bar chart, r-bar...
Please compute the value, upper control limit, and lower
control limit for the x-bar chart, r-bar chart, p
chart, and np chart.
Sample #
Observations
Defects
1
44
49
44
44
40
0
2
42
46
51
51
42
2
3
45
45
49
49
46
2
4
40
39
42
42
47
7
5
44
51
53
53
44
2
6
41
44
43
43
46
8
7
40
44
46
46
48
3
8
54
49
48
48...
Refer to the Body Measurements Female Data Set and Body Measurements Male Data Set found in...
Refer to the Body Measurements Female Data Set and Body
Measurements Male Data Set found in StatDisk (Elementary Stats 12th
Edition, sets #1a and 1b) and use columns 5 for HDL. Use a .05
significance level to test the claim that men and women have the
same mean HDL level (High-Density Lipoprotein) female 74 56 70 40
67 96 43 80 77 41 23 76 39 52 38 37 57 81 37 50 73 61 33 41 60 62
67...
The Whitcomb Company manufactures a metal ring for industrial engines that usually weighs about 50 ounces....
The Whitcomb Company manufactures a metal ring for industrial
engines that usually weighs about 50 ounces. A random sample of 50
of these metal rings produced the following wights (in ounces).
51
53
56
50
44
47
53
53
42
57
46
55
41
44
52
56
50
57
44
46
41
52
69
53
57
51
54
63
42
47
47
52
53
46
36
58
51
38
49
50
62
39
44
55
43
52
43
42
57...
Q1. A clinical trial is run to assess the effects of different forms of regular exercise...
Q1. A clinical trial is run to assess the effects of
different forms of regular exercise on HDL levels in persons
between the ages of 18 and 29. Participants in the study are
randomly assigned to one of three exercise groups - Weight
training, Aerobic exercise, or Stretching/Yoga – and instructed to
follow the program for 8 weeks. Their HDL levels are measured after
8 weeks and are summarized below.
Weight Training
Aerobic Exercise
Stretching/Yoga
48
38
56
49
41...
This dataset contains consumer responses indicating the number of times they had to send their product...
This dataset contains consumer responses indicating the number
of times they had to send their product for repair and their
satisfaction with the repair process. Create a graph which can be
used to visually demonstrate the relationship between the two
columns of data. Ensure that the chart is professional with
appropriate titles, axis labels, etc. Note any observations you see
in your visualization (type these as sentences directly into an
Excel cell(s)).
Sample
Satisfaction Rating
Repair Requests
1
63%
13...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 6 minutes ago
asked 10 minutes ago
asked 24 minutes ago
asked 31 minutes ago
asked 49 minutes ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 2 hours ago
asked 2 hours ago