Math
5) [5 pts] Teratciosidrodena studies the behaviour of black bears. She has come to the conclusion that the cutting down of trees has affected the areas the bears use on a daily basis. This is called the home range. Teratciosidrodena has calculated the home range in square kilometres. The mean home range from her studies is 26.28 square kilometreswith a standard deviation of 11.47 square kilometres. How many black bears should she study if she wants to be 95 % confident that the mean is within 5 square kilometres of the population mean
Homework Answers
Please answer all questions using the last page below. Chapter 7 1. As part of an...
Please answer all questions using the last page below. Chapter 7 1. As part of an environmental studies class project, students measured the circumferences of a random sample of 45 blue spruce trees near Brainard Lake, Colorado. The sample mean circumference was x̅ = 29.8 inches. Assume that σ is known to be 7.2 inches. (a) Find a 95% confidence interval for the population mean circumference of all blue spruce trees near this lake. (b) Interpret the meaning of the...
Just 4 and 5 The Appalachian Bear Center (ABC) is a not-for-profit organization located near the...
Just 4 and 5 The Appalachian Bear Center (ABC) is a not-for-profit organization located near the Great Smoky Mountains National Park. ABC’s programs include the rehabilitation of orphaned and injured black bears, as well as research and education about Appalachian black bears. ABC provides the most natural environment possible for rehabilitating black bears before their release back into the wild. Katie Settlage performed a study to learn more about the Appalachian black bear population in the Great Smoky Mountains National...
Use me Tonowing steps to calculate we yo comuncu Merval Tor me uuerence II mean temperature...
Use me Tonowing steps to calculate we yo comuncu Merval Tor me uuerence II mean temperature between the two rivers. a) What is the estimate for the standard error of the difference between the two means? giv b) i Using degrees of freedom, v = 41.92, what is the appropriate multiplier to use for this calculation? Calculate the 95% confidence interval for the difference in mean temperature in the affected and unaffected rivers (uaffected - Munaffected). (i) The lower limit...
What is the sample correlation coefficient rxy between xi and yi? Find the 95% confidence interval...
What is the sample correlation coefficient
rxy between xi and
yi?
Find the 95% confidence interval for the regression
coefficient β1.
Test at a 0.05 level of significance to determine
whether the regression coefficient β1 is larger than
20.
- Alternatives
-Decision Rules
-Conclusion
Problem. Gwyneth Paltrow wants to develop a simple linear regression model, X. = Bo + Boxi + Ej, to predict the total sum of money in $1,000) customers withdraw from automatic teller machines (ATMs) on a...
"A public relations officer of William Paterson University wants to estimate the mean IQ of the...
"A public relations officer of William Paterson University wants to estimate the mean IQ of the university students. If she wants to be 99% confident that her sample mean is off by no more than 3 points, how many students she has to test in order to come up with a valid estimation? A recent study shows that IQ of New Jersey students has standard deviation of 15 points a) 162 b) 13 c) 171 d) None of the above...
2. Homework 19, Question 2 A real estate agent is interested in estimating the value of a piece o...
Price
Lot size
Trees
Distance
89.7
21.8
45
62
136.1
66.3
79
34
44.7
28.2
53
77
63.2
41.9
64
65
163.4
46.7
69
27
64.1
32.1
12
0
98.7
38.5
59
77
139.9
27.6
10
0
92
47
65
37
66.6
20.7
24
51
16.4
34
22
75
131.9
31.9
56
63
11
28
12
42
27.9
40
52
84
103.5
46.6
36
70
107
23.2
11
83
51.6
46.4
53
44
133.4
32.1
55
98
101.4
35.3
38...
As a nurse, you oversee the Health Clinic at a local college. Today you are conducting...
As a nurse, you oversee the Health Clinic at a local college. Today you are conducting physicals on the soccer team members. Susan admits that she has been feeling very tired lately. You decide to investigate further. Upon examining Susan, you note that she appears to be pale, and, in addition to feeling tired, she always seems to be cold. A urine sample is provided, and blood work is done. A dietary assessment is also completed. Breakfast: 2 slices wheat...
Question 7 (1 point) The owner of a local golf course wants to determine the average...
Question 7 (1 point) The owner of a local golf course wants to determine the average age of the golfers that play on the course in relation to the average age in the area. According to the most recent census, the town has an average age of 55.89. In a random sample of 30 golfers that visited his course, the sample mean was 45.84 and the standard deviation was 6.514. Using this information, the owner calculated the confidence interval of...
The manager of Roth Corporation, wants to determine whether or not the type of work schedule...
The manager of Roth Corporation, wants to determine whether or not the type of work schedule for her employees has any effect on their productivity. She has selected 15 production employees at random and then randomly assigned 5 employees to each of the 3 proposed work schedules. The following table shows the units of production (per week) under each of the work schedules. Work Schedule (Treatments) Schedule 1 Schedule 2 Schedule 3 60 65 65 58 57 50 60 70...
M.J. is a 76-year-old woman who lives on the side of a very steep mountain. The...
M.J. is a 76-year-old woman who lives on the side of a very steep mountain. The home helath nurse has visited her once a week for the last year. She has running water, electricity, and a coal stove with back-up oil heat for very cold winter nights. She uses the telephone for communication. She has diabetes mellitus, hypertension, hypothyroidism, and is in atrial fibrillation. She has never been in the hospital before. Her current medications include metformin 250mg twice a...
Use me Tonowing steps to calculate we yo comuncu Merval Tor me uuerence II mean temperature between the two rivers. a) What is the estimate for the standard error of the difference between the two means? giv b) i Using degrees of freedom, v = 41.92, what is the appropriate multiplier to use for this calculation? Calculate the 95% confidence interval for the difference in mean temperature in the affected and unaffected rivers (uaffected - Munaffected). (i) The lower limit...
What is the sample correlation coefficient
rxy between xi and
yi?
Find the 95% confidence interval for the regression
coefficient β1.
Test at a 0.05 level of significance to determine
whether the regression coefficient β1 is larger than
20.
- Alternatives
-Decision Rules
-Conclusion
Problem. Gwyneth Paltrow wants to develop a simple linear regression model, X. = Bo + Boxi + Ej, to predict the total sum of money in $1,000) customers withdraw from automatic teller machines (ATMs) on a...
"A public relations officer of William Paterson University wants to estimate the mean IQ of the university students. If she wants to be 99% confident that her sample mean is off by no more than 3 points, how many students she has to test in order to come up with a valid estimation? A recent study shows that IQ of New Jersey students has standard deviation of 15 points a) 162 b) 13 c) 171 d) None of the above...
Price
Lot size
Trees
Distance
89.7
21.8
45
62
136.1
66.3
79
34
44.7
28.2
53
77
63.2
41.9
64
65
163.4
46.7
69
27
64.1
32.1
12
0
98.7
38.5
59
77
139.9
27.6
10
0
92
47
65
37
66.6
20.7
24
51
16.4
34
22
75
131.9
31.9
56
63
11
28
12
42
27.9
40
52
84
103.5
46.6
36
70
107
23.2
11
83
51.6
46.4
53
44
133.4
32.1
55
98
101.4
35.3
38...
The manager of Roth Corporation, wants to determine whether or not the type of work schedule for her employees has any effect on their productivity. She has selected 15 production employees at random and then randomly assigned 5 employees to each of the 3 proposed work schedules. The following table shows the units of production (per week) under each of the work schedules. Work Schedule (Treatments) Schedule 1 Schedule 2 Schedule 3 60 65 65 58 57 50 60 70...
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