Question
In: Statistics and Probability
A professor of business at a local college wanted to determine which of his two methods...
A professor of business at a local college wanted to determine which of his two methods of teaching statistics resulted in better grades. He randomly selected 30 students from his current classes and set up two special sub-sections of the course, one for each of his two methods, with 15 students in each sub-section. After the semester was over, he placed the final averages for each of the students in a spreadsheet and wanted to determine if the difference in the average scores of the samples indicated that there would be a difference in the scores of the population of students.
Use the correct Excel function found in Data Analysis to determine if the population average scores of the two methods are the same. At the bottom of the Excel worksheet, write a Decision Rule and Conclusion Statement
Method 1: 86, 69, 85, 68, 68, 68, 87, 85, 85, 72, 67, 73, 84, 66, 76
Method 2: 91, 94, 55, 96, 70, 91, 58, 87, 64, 87, 95, 65, 86, 75, 88
Solutions
orchestra answered 11 months agoRelated Solutions
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A doctor wanted to determine whether there is a relation between a male's age and his...
A doctor wanted to determine whether there is a relation between
a male's age and his HDL (so-called good) cholesterol. The doctor
randomly selected 17 of his patients and determined their HDL
cholesterol. The data obtained by the doctor is the in the data
table below. Complete parts (a) through (f) below.
Age, x
HDL Cholesterol, y
Age, x
HDL Cholesterol, y
38
56
39
46
44
56
65
64
45
32
28
52
33
57
53
37
53
37...
A doctor wanted to determine whether there is a relation between a male's age and his...
A doctor wanted to determine whether there is a relation between
a male's age and his HDL (so-called good) cholesterol. The doctor
randomly selected 17 of his patients and determined their HDL
cholesterol. The data obtained by the doctor is the in the data
table below.
Age_-_x HDL Cholesterol_-_y
36 58
44 56
46 33
30 55
57 36
52 42
62 42
60 39
25 48
38 44
68 60
28 52
52 34
27 47
53 39
47 ...
The proprietor of a boutique in New York wanted to determine the average age of his...
The proprietor of a boutique in New York wanted to determine the
average age of his customers. A random sample of 53 customers
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The proprietor of a boutique in New York wanted to determine the average age of his...
The proprietor of a boutique in New York wanted to determine the
average age of his customers. A random sample of 53 customers
revealed an average age of 28 years with a standard deviation of 4
years. Determine a 98% confidence interval estimate for the average
age of all his customers.
A doctor wanted to determine whether there is a relation between a male's age and his...
A doctor wanted to determine whether there is a relation between
a male's age and his HDL (so-called good) cholesterol. The doctor
randomly selected 17 of his patients and determined their HDL
cholesterol. The data obtained by the doctor is the in the data
table below. Complete parts (a) through (f) below.
Data:
Age, x, HDL Cholesterol, y
36 56
41 55
47 32
30 56
54 37
51 40
59 40
61 39
25 47
36 43
65 61
29 ...
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The data is reported in the table below: Age (Yrs) HDL (LaTeX: \mu
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38 57
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52 40
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A doctor wanted to determine whether there is a relation between a male's age and his...
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2. Click the icon to view the Student's t-distribution
table.
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