Mathematics, 30.10.2019 06:31, cococat7773
Ainternet provider has implemented a new process for handling customer complaints. based on a review of customer complaint data for the past 2 years, the mean time for handling a customer complain was 27 minutes. three months after implementing the plan, a random sample of the records of 50 customers who had complaints produced the following response times. use the 50 data values to determine if the new process has reduced the mean time to handle customer complaints. 32.3 26.9 25.4 32.9 27.7 32.2 24.8 20.5 30.4 21.3 25.9 27.1 19.2 28.4 18.0 33.1 31.1 21.9 33.4 24.3 25.5 29.6 32.7 21.3 31.8 27.6 17.4 26.9 18.9 28.6 23.5 21.6 20.1 30.9 26.8 28.7 24.6 21.5 21.9 28.3 24.1 28.9 29.8 27.1 23.8 25.3 30.7 27.2 19.0 30.0
a. estimate the mean time for handling a customer complaint under the new process using a 95% confidence interval.
b. is there substantial evidence (a .05) that the new process has reduced the mean time to handle a customer complaint?
c. what is the population about which inferences from these data can be made?
Answers: 3
Mathematics, 21.06.2019 20:10, kingdrew27
Acolony contains 1500 bacteria. the population increases at a rate of 115% each hour. if x represents the number of hours elapsed, which function represents the scenario? f(x) = 1500(1.15)" f(x) = 1500(115) f(x) = 1500(2.15) f(x) = 1500(215)
Answers: 3
Mathematics, 22.06.2019 05:00, luffybunny
At a little-known vacation spot, taxi fares are a bargain. a 49-mile taxi ride takes 63 minutes and costs $44.10. you want to find the cost of a 37-minute taxi ride. what unit price do you need?
Answers: 2
Ainternet provider has implemented a new process for handling customer complaints. based on a review...
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