Mathematics, 28.04.2021 19:00 jojo492192
1) A dog walker sells leashes to her customers. She buys leashes from her
supplier at a wholesale price of $7 each. She marks up each leash by $2.
What is the percent increase from the wholesale price to the total price?
a. 2596
b. 29%
C. 35%
d. 45%
Answers: 3
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Line l passes through points (0,4) and (3,6) what is the slope of a line that is parallel to line l -2/3 -3/2 2/3 3/2
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Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?
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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
1) A dog walker sells leashes to her customers. She buys leashes from her
supplier at a wholesale...
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