Answers: 2
Mathematics, 22.06.2019 04:10
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
Mathematics, 22.06.2019 06:30
Solve the system by substitution. if the system is inconsistent or has dependent equations, say so. 5x-6y=-27 -5x+y=0
Answers: 2
Mathematics, 22.06.2019 08:00
Triangle abc and triangle deg are similar right triangles. which proportion can be used to show that the slope of ac is equal to the slope of dg? a) 4 โ (โ7) 0 โ 4 = โ1 โ 10 4 โ 8 b) โ4 โ (โ7) 0 โ 4 = 4 โ 8 โ1 โ (โ10) c) 0 โ 4 โ4 โ (โ7) = โ1 โ (โ10) โ4 โ 8 d) 0 โ 4 โ4 โ (โ7) = โ4 โ 8 โ1 โ (โ10)
Answers: 1
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