An internet service provider (ISP) sampled 450 customers and found that 86 of them experienced an...
An internet service provider (ISP) sampled 450 customers and found that 86 of them experienced an interruption in their service the previous month.
(a) Construct a 95% confidence interval for the proportion of customers who experience an outage.
(b) A quality assurance technician claims that no more than 16% of its customers experience an outage. Does your confidence interval support this claim?
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An internet service provider (ISP) sampled 450 customers and
found that 86 of them experienced an...
6) An internet service provider sampled 454 customers and finds that 112 of them experienced an...
6) An internet service provider sampled 454 customers and finds that 112 of them experienced an interruption in high speed service during the previous month. What is the upper bound 99% confidence interval for the proportion of customers who experienced an interruption. Round to three decimal places. 7) The Nielsen Company surveyed 378 owners of android phones and found that 216 of them planned to get another android. What is the lower bound 95% confidence interval for the proportion of...
(COMPUTE AND INTERPRET CONFIDENCE INTERVAL ESTIMATES) An Internet service provider sampled 540 customers and found that...
(COMPUTE AND INTERPRET CONFIDENCE INTERVAL ESTIMATES) An Internet service provider sampled 540 customers and found that 75 of them experienced an interruption in high-speed service during the previous month. Construct a 90% confidence interval for the proportion of all customers who experienced an interruption. Find the critical values, find E , the margin of error, then compute and interpret your interval estimate with a full sentence. Critical value: (draw, label & shade) Margin of error, E : Confidence Interval:
A survey is carried out to study the number of hours, X, per day spent on using the Internet by the customers of an Internet Service Provider (ISP). Responses from 15 randomly selected customers give the following data:
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Identify the following: x n p’ sqrt(p’*(1-p’)/n) Define the random variables X and P’ in words. Construct a 95% confidence interval for the proportion of all customers who experienced an interrupt...
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Question 4 (0.5 points) Sleep apnea is a disorder in which there are pauses in breathing...
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An Internet server conducted a survey of 400 of its customers and found that the average...
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12. An Internet server conducted a survey of 400 of its customers and found that the...
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The CEO of a large electric utility claims that 80 percent of his 1,000,000 customers are...
The CEO of a large electric utility claims that 80 percent of his 1,000,000 customers are very satisfied with the service they receive. To test this claim, the local newspaper surveyed 100 customers using simple random sampling to determine if the proportion differs from 80%. Among the sampled customers, 73 say they are very satisfied. Based on these findings, can we reject the CEO's hypothesis that 80% of the customers are very satisfied? Use a 0.05 level of significance. a)...
gnt wll take 20 or less minutes to get 6. (10 marks) AbeNet, an Internet service provider 0SP), has esperieeed rapid...
gnt wll take 20 or less minutes to get 6. (10 marks) AbeNet, an Internet service provider 0SP), has esperieeed rapid guowth in and past five years. As a part of its marketing strategy, AbcNet promists dependable service. To achieve its obiectives. AbcNet constantl its servers. On fast connections and y evaluates the capacity of e component of its evaluation is an analysis of the average amount of time connected and using the Internet daily. A random sample of 12...
#2 c ENGR 320 Spring 2018 Test Number Two 1. 1. A distributor receives a large...
#2 c
ENGR 320 Spring 2018 Test Number Two 1. 1. A distributor receives a large number of components. The distributor will tike to accept the shipment if 10% or fewer of the components are defective and to return it if more than 10% of the components are defective. She decides to sample 10 components and to return the shipment if more than 1 of the 10 is defective. If the proportion of defectives in the batch is in fact...
Question 4 (0.5 points) Sleep apnea is a disorder in which there are pauses in breathing during sleep. People with this condition must wake up frequently to breathe. In a sample of 339 people aged 65 and over, 112 of them had sleep apnea. What is the lower bound for the 90% confidence interval for the proportion of those aged 65 and over who have sleep apnea. Round to three decimal places (for example: 0.419). Write only a number as...
12. An Internet server conducted a survey of 400 of its customers and found that the average amount of time spent online was 12.5 hours per week with a standard deviation of 5.4 hours. What shape do you think the random variable x, the number of hours spent online, has? If the distribution of the original measurements is not normal, you can still use the standard normal distribution to construct a confidence interval for 4, the average online time for...
gnt wll take 20 or less minutes to get 6. (10 marks) AbeNet, an Internet service provider 0SP), has esperieeed rapid guowth in and past five years. As a part of its marketing strategy, AbcNet promists dependable service. To achieve its obiectives. AbcNet constantl its servers. On fast connections and y evaluates the capacity of e component of its evaluation is an analysis of the average amount of time connected and using the Internet daily. A random sample of 12...
#2 c
ENGR 320 Spring 2018 Test Number Two 1. 1. A distributor receives a large number of components. The distributor will tike to accept the shipment if 10% or fewer of the components are defective and to return it if more than 10% of the components are defective. She decides to sample 10 components and to return the shipment if more than 1 of the 10 is defective. If the proportion of defectives in the batch is in fact...
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