77 80 80 84 84 85 86 86 87 87 89 93 94 94 96 96...

77 80 80 84 84 85 86 86 87 87 89 93 94 94 96 96 97 97 97 98 99 100 100 102 102 103 104 104 104 105 105 106 106 109 110 110 115 125 127 128

An electric supplier tracks the response time to customers reported outages. The data given above is a random sample of 40 of the response time (in minutes) for one operating division of this utility during a single month.

The utility company claims that their response to emergency outages is under two hours. Using a confidence level of 95% and the proper test statistic, determine if the utility company on average does respond within the two hours.

Expert Solution

orchestra answered 2 years ago

Depression Anxiety 79 80 87 97 95 85 93 85 86 94 96 94 95 94...

Depression Anxiety 79 80 87 97 95 85 93 85 86 94 96 94 95 94 98 76 84 61 97 97 97 97 97 88 100 97 89 94 94 88 98 97 98 94 94 73 89 94 93 82 83 79 90 97 88 100 84 91 93 94 86 94 84 88 88 94 92 94 95 89 95 79 83 76 Perform the appropriate test and provide a narrative write up for the Depression and...

placebo: 110, 89, 86, 87, 85, 87, 74, 85 sleeping pill: 99, 84, 94, 87, 87,...

placebo: 110, 89, 86, 87, 85, 87, 74, 85 sleeping pill: 99, 84, 94, 87, 87, 106,102, 91 given data above. patients are testing out the new sleeping pill. Subjects' rapid eye movement (REM) was measures before and after they received the sleeping pill. 1)critical t or z value? 2)reject or fail to reject the null hypothesis 3)compute 95% confidence interval around the sample mean 4) compute Cohens d and explain its meaning 5) summarize your results using the correct...

92 99 96 94 94 94 90 95 90 89 89 80 83 88 88 1. What...

92 99 96 94 94 94 90 95 90 89 89 80 83 88 88 1. What is the n? __________ 2. What is ∑x ? __________ 3. What is ∑x2? __________ 4. What is (∑x)2? __________ 5. What is the range? __________ 6. What is the mean? __________ 7. What is the median? __________ 8. What is the mode? __________ 9. What is the variance? __________ 10. What is the standard deviation? __________ 11. If Kara scored a 90 (x)….What is her Z-score? __________ 12. If Sara scored a 95….What is her T-score? __________ 13. Mark scored an 88 (one of...

93 95 93 81 88 88 84 75 89 81 92 91 83 78 88 77...

93 95 93 81 88 88 84 75 89 81 92 91 83 78 88 77 95 94 90 94 80 84 95 87 92 92 94 84 83 89 84 87 78 99 97 79 93 83 76 92 96 77 52 89 95 76 87 92 80 70 94 90 93 83 88 89 95 87 88 96 92 87 96 93 96 81 93 76 78 96 96 84 89 91 92 87 91 90 86 88...

Gas Heated Homes Central Electric Heat Pump 86 78 86 84 78 83 82 87 80...

Gas Heated Homes Central Electric Heat Pump 86 78 86 84 78 83 82 87 80 86 72 92 82 63 89 At α= .05, test to see if there is a significant difference among the average bills of all the homes (in a city) using three forms of heating. Use both the critical and p-value approaches. Be sure to include your hypotheses, critical values, results, and conclusions in the language of the problem.

For the following data 86 84 91 75 78 80 74 75 87 76 82 90...

For the following data 86 84 91 75 78 80 74 75 87 76 82 90 98 68 What is the mean? ______ What is the median?_________ What is the mode (if any)? _____ What is the standard deviation? ____ What is the variance? ______ What is the five-number summary for this data? Draw a boxplot with reasonable attention to scale. Create a stemplot of this data. Using the same data set and ignoring the fact that the 5-number summary...

A study is conducted to determine if a newly designed text book is more helpful to learning the material than the old edition. Test Score 80 85 73 68 92 89 79 70 94 96

A study is conducted to determine if a newly designed text book is more helpful to learning the material than the old edition. The mean score on the final exam for a course using the old edition is 75. Ten randomly selected people who used the new text took the final exam. Their scores are shown in the table below. Person A B C D E F G H I J Test Score 80 85 73 68 92 89 79...

57, 69, 70, 71, 74, 77, 79, 80, 80, 80, 80, 81, 81, 82, 85, 85,...

57, 69, 70, 71, 74, 77, 79, 80, 80, 80, 80, 81, 81, 82, 85, 85, 86, 88, 91, 95, 95, 100 1) Create a relative frequency table for these data. 2) Create a histogram for these data and comment on the shape of the distribution (skewed, symmetric, etc). 3) Create a boxplot for the data (you’ll need to report the median, quartiles, and outliers).

29; 37; 38; 40; 58; 67; 68; 69; 76; 86; 87; 95; 96; 96; 99; 106;...

29; 37; 38; 40; 58; 67; 68; 69; 76; 86; 87; 95; 96; 96; 99; 106; 112; 127; 145; 150 What is the Standard deviation (please round to two decimal places)?

EX1 EX2 Ex3 FINAL 73 80 75 152 93 88 93 185 89 91 90 180...

EX1 EX2 Ex3 FINAL 73 80 75 152 93 88 93 185 89 91 90 180 96 98 100 196 73 66 70 142 53 46 55 101 69 74 77 149 47 56 60 115 87 79 90 175 79 70 88 164 69 70 73 141 70 65 74 141 93 95 91 184 79 80 73 152 70 73 78 148 93 89 96 192 78 75 68 147 81 90 93 183 88 92 86 177...

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