The accompanying table shows the value of a car over time that was purchased for 12800 dollars, where x is years and y is the value of the
car in dollars. Write an exponential regression equation for this set of
data, rounding all coefficients to the nearest hundredth. Using this
equation, determine the value of the car, to the nearest cent, after 16
years.
Years (x) Value in Dollars (y)
O
12800
1
10554
2
10080
3.
8269
4.
6840
16 PM
3/3/2021
BI
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hi

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: