1. The test scores in a class are 67, 83, 71, 103, 76, 95, 20, 96,...
1. The test scores in a class are 67, 83, 71, 103, 76, 95, 20, 96, 124, 79, 98, 115, 108, 113, 86, 113, 106, 83, 71, 80, 102. 85, 94. Give a 95% CI for the first quintile.
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1. The test scores in a class are 67, 83, 71, 103, 76, 95, 20,
96,...
8. Assume that the distribution of the sample in Problem 1 s N(μ, σ2). Find a 95% CI for σ2 1. ...
question 1:
8. Assume that the distribution of the sample in Problem 1 s N(μ, σ2). Find a 95% CI for σ2 1. The test scores in a class are 67, 83, 71, 103, 76, 95, 20, 96, 124, 79, 98, 115, 108, 113, 86, 113, 106, 83, 71, Give a 95% CI for the first quartile π1/4.
8. Assume that the distribution of the sample in Problem 1 s N(μ, σ2). Find a 95% CI for σ2
1. The...
Using simple regression, determine whether test scores are significantly related to sales performance. Use significance level...
Using simple regression, determine whether test scores are
significantly related to sales performance. Use significance level
of 0.05%. Clearly interpret the slope (beta coefficient) and the
adjusted R squared value you obtained.
Using multiple regression, determine whether test scores and
number of months are significantly related to sales performance.
Use significance level of 0.05%. Clearly interpret the slopes (beta
coefficients) and the adjusted R squared value you obtained.
E ៥ដង А B c D 1 DATA SET FOR SALESFORCE PROBLEM...
5. Mark’s class just took the admission test for business school and averaged 87.05. Chapter 10...
5. Mark’s class just took the admission test for business school and averaged 87.05. Chapter 10 Data Set 2 contains the population of scores for the 10 other classes in Mark’s university. How did Mark’s class do? Class 1 Class 2 Class 3 Class 4 Class 5 Class 6 Class 7 Class 8 Class 9 Class 10 78 81 96 85 88 78 90 79 96 86 77 78 97 90 88 82 86 93 87 89 78 93 88...
The following are the IQ scores of 60 students from a university. The histogram of the...
The following are the IQ scores of 60 students from a university. The histogram of the data is symmetric. 79 79 81 82 82 84 84 84 85 85 86 86 87 89 89 89 90 90 90 91 91 92 92 93 94 95 95 96 98 99 99 102 102 102 103 104 104 104 105 106 106 106 108 109 109 110 111 111 113 113 113 115 117 117 120 121 123 124 125 130 a....
Here is your (discrete) data 108 83 93 118 88 58 88 65 113 103 119...
Here is your (discrete) data 108 83 93 118 88 58 88 65 113 103 119 101 91 92 95 86 85 73 94 61 121 71 116 78 114 119 118 131 41 70 68 98 202 155 41 93 78 96 93 110 100 61 98 39 94 86 108 75 64 50 90 123 109 69 118 85 102 86 153 109 89 134 80 104 96 129 48 81 102 31 97 130 98 105 109...
USE R AND SHOW CODES!! The IQ was measured for 35 twins. Is there any difference...
USE R AND SHOW CODES!! The IQ was measured for 35 twins. Is there any difference in IQ between twins? DATA Twin 1 Twin 2 113 109 94 100 99 86 77 80 81 95 91 106 111 117 104 107 85 85 66 84 111 125 51 66 109 108 122 121 97 98 82 94 100 88 100 104 93 84 99 95 109 98 95 100 75 86 104 103 73 78 88 99 92 111 108...
Midterm1 = (83.33, 98.33, 75, 91.67, 96.67, 95, 86.67, 65, 100, 100, 80, 88.33, 96.67, 96.67,...
Midterm1 = (83.33, 98.33, 75, 91.67, 96.67, 95, 86.67, 65, 100,
100, 80, 88.33,
96.67, 96.67, 90, 96.67, 86.67, 93.33, 80, 91.67, 98.33, 86.67, 85,
86.67, 95,
83.33, 96.67, 81.67, 98.33, 100, 95, 93.33, 91.67, 88.33, 98.33,
93.33, 98.33,
93.33, 85, 88.33, 100, 98.33, 96.67, 90, 86.67, 100, 96.67, 98.33,
90, 96.67,
86.67, 95, 78.33, 86.67, 100, 81.67, 96.67, 91.67, 96.67, 96.67,
95, 96.67, 73.33,
100, 93.33, 96.67, 88.33, 70, 96.67, 96.67, 100, 88.33, 96.67, 100,
88.33, 100,
78.33, 93.33,...
1. For each set below, using Excel, construct a. a frequency distribution, ...
1. For each set below, using Excel, construct a. a frequency distribution, b. a relative frequency distribution, and c. a cumulative relative frequency distribution. Consider whether or not you should group your data. Describe how you determined your bin width, if you grouped the data in intervals. Set 1 75 95 103 100 93 91 90 92 89 105 86 85 81 96 103 99 94 95 91 97 92 107...
Ms. Lopez gave her students a biology test last week Here are the test scores for...
Ms. Lopez gave her students a biology test last week Here are the test scores for each of the eighteen students. Test scores 79 70 68 85 87 76 71 83 78 67 81 86 74 67 66 72 76 80 (a) Complete the grouped frequency distribution for the data. (Note that the class width is 6.) (b) Construct a histogram for the data. Frequency Test scores Frequency 65.5-71.5 71.5-77.5 77.5-83.5 83.5-89.5 775 71.5 Test scores 835 S2
Use the Grouped Distribution method for the following exercise (see Self-Test 2-4 for detailed instructions), rounding...
Use the Grouped Distribution method for the following exercise (see Self-Test 2-4 for detailed instructions), rounding each answer to the nearest whole number. Using the frequency distribution below (scores on a statistics exam taken by 80 students), determine:ion 1 of the preliminary test (scores on a statistics exam taken by 80 students), determine: 68 84 75 82 68 90 62 88 76 93 73 79 88 73 60 93 71 59 85 75 61 65 75 87 74 62 95...
question 1:
8. Assume that the distribution of the sample in Problem 1 s N(μ, σ2). Find a 95% CI for σ2 1. The test scores in a class are 67, 83, 71, 103, 76, 95, 20, 96, 124, 79, 98, 115, 108, 113, 86, 113, 106, 83, 71, Give a 95% CI for the first quartile π1/4.
8. Assume that the distribution of the sample in Problem 1 s N(μ, σ2). Find a 95% CI for σ2
1. The...
Using simple regression, determine whether test scores are
significantly related to sales performance. Use significance level
of 0.05%. Clearly interpret the slope (beta coefficient) and the
adjusted R squared value you obtained.
Using multiple regression, determine whether test scores and
number of months are significantly related to sales performance.
Use significance level of 0.05%. Clearly interpret the slopes (beta
coefficients) and the adjusted R squared value you obtained.
E ៥ដង А B c D 1 DATA SET FOR SALESFORCE PROBLEM...
Midterm1 = (83.33, 98.33, 75, 91.67, 96.67, 95, 86.67, 65, 100,
100, 80, 88.33,
96.67, 96.67, 90, 96.67, 86.67, 93.33, 80, 91.67, 98.33, 86.67, 85,
86.67, 95,
83.33, 96.67, 81.67, 98.33, 100, 95, 93.33, 91.67, 88.33, 98.33,
93.33, 98.33,
93.33, 85, 88.33, 100, 98.33, 96.67, 90, 86.67, 100, 96.67, 98.33,
90, 96.67,
86.67, 95, 78.33, 86.67, 100, 81.67, 96.67, 91.67, 96.67, 96.67,
95, 96.67, 73.33,
100, 93.33, 96.67, 88.33, 70, 96.67, 96.67, 100, 88.33, 96.67, 100,
88.33, 100,
78.33, 93.33,...
Ms. Lopez gave her students a biology test last week Here are the test scores for each of the eighteen students. Test scores 79 70 68 85 87 76 71 83 78 67 81 86 74 67 66 72 76 80 (a) Complete the grouped frequency distribution for the data. (Note that the class width is 6.) (b) Construct a histogram for the data. Frequency Test scores Frequency 65.5-71.5 71.5-77.5 77.5-83.5 83.5-89.5 775 71.5 Test scores 835 S2
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