Mathematics, 10.12.2020 17:40 rostecorralmart
What describes the graph of y = - |x + 1| - 5?
A. a ‘V’ shaped graph with vertex at (-1, 5), which opens down
B. a ‘V’ shaped graph with vertex at (-1, -5), which opens down
C. a ‘V’ shaped graph with vertex at (-5, 1), which opens up
D. a ‘V’ shaped graph with vertex at (-5, 1), which opens up
Answers: 1
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You are in charge of the customer service phone line with many employees. at the end of each phone callthe customers are asked to rate their service from 1 to 5 stars, with 5 being the best. you find the averagerating for 20 randomly selected employees and decide you want to improve the ratings so you require thoseemployees to go through a new training program. you then wait a week and find the new average rating foreach employee. the average change is an increase in 1.3 stars with a standard devation of .9 stars.(a) is this data paired or not paired? (b) what are the null and alternative hypothesis being tested? (c) what is the t-statistic you would use? write the general formula and the final calculation.(d) sketch a t-distribution, label your t-statistic and the probability you would be interested in:
Answers: 2
What describes the graph of y = - |x + 1| - 5?
A. a ‘V’ shaped graph with vertex at (-1, 5), which...
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