Mathematics, 25.02.2020 21:53 dudeguy3593
Are the marks one receives in a course related to the amount of time spent studying the subject? To analyze this mysterious possibility, a student took a random sample of 10 students who had enrolled in an accounting class last semester. He asked each to report his or her mark in the course and the total number of hours spent studying accounting. These data are listed here.
Marks
Time Spent Studying
77
40
63
42
79
37
86
47
51
25
78
44
83
41
90
48
65
35
47
28
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a.
Calculate the covariance.
b.
Calculate the coefficient of correlation.
c.
What do the statistics calculated above tell you about the relationship between marks and study time?
A. First, do the calculations for covariance and coefficient of correlation using only Excel's add/Sum, subtract, multiply, divide functions (OK, use ^2 (to square a number) )
B. Then calculate the covariance and coefficient of correlation using Excel's CORREL and COVAR functions
C. What do the statistics calculated above tell you about the relationship between marks and study time?
Answers: 1
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Given: jk ||lm prove: _2 = 27 statement justification 1. jk ||lm 1. given 2.26 = 27 3.22 = 26 2. 3. 4. _2 = 27 4. corresponding angles theorem transitive property of equality vertical angles theorem substitution property of equality
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F. a fair coin is thrown in the air four times. if the coin lands with the head up on the first three tosses, what is the probability that the coin will land with the head up on the fourth toss? a. 0 b. 1/16 c. 1/8 d. 1/2
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The domain of the following relation: r: {(3, 5), (8, 6), (2, 1), (8, 6)} is (1 point) no domain exists {1, 5, 6} {3, 8, 2, 8} {2, 3, 8}
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Are the marks one receives in a course related to the amount of time spent studying the subject? To...
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