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QUESTION 25 Market research for an internet provider found that 12% of all their customers were...
A hotel claims that 85% of its customers are very satisfied with its service. Complete parts...
A hotel claims that 85% of its customers are very satisfied with its service. Complete parts a through d below based on a random sample of seven customers. a. What is the probability that exactly six customers are very satisfied? (Round to four decimal places as needed.) b. What is the probability that more than six customers are very satisfied? (Round to four decimal places as needed.) c. What is the probability that less than five customers are very satisfied?...
The answers are in red. I just want to know how to correctly solve this... A hotel claims that 85% of its customers are...
The answers are in red. I just
want to know how to correctly solve this...
A hotel claims that 85% of its customers are very satisfied with its service. Complete parts a through d below based on a random sample of five customers. a. What is the probability that exactly four customers are very satisfied? 0.3915 (Round to four decimal places as needed.) b. What is the probability that more than four customers are very satisfied? 0.4437 (Round to four...
An Internet service provider states that the average number of hours its customers are online each...
An Internet service provider states that the average number of hours its customers are online each day is 4.08. Suppose a random sample of 14 of the company's customers is selected and the average number of hours that they are online each day is measured. The sample results are shown in the accompanying table. 5.76 6.08 4.26 5.85 6.82 1.77 7.66 5.11 3.89 2.67 6.89 6.68 3.58 1.12 Based on the sample of 14 customers, how much sampling error exists?...
1522 customers at a major retailer were surveyed whether or not they made a purchase and...
1522 customers at a major retailer were surveyed whether or not they made a purchase and were satisfied with the service they received. The table below organizes the responses. Satisfied with Service Not Satisfied With Service Total Made a Purchase 130 494 624 Did not make a purchase 715 183 898 Total 845 677 1522 a. What is the probability that a shopper selected at random made a purchase, given that they were not satisfied with the service? Write your...
12. An Internet server conducted a survey of 400 of its customers and found that the...
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...
An internet service provider states that the average number of hours its customers are online each...
An internet service provider states that the average number of hours its customers are online each day is 4.01. Suppose a random sample of 14 of the companys customers is selected and the average number of hours that they are online each day is measured. The sample results are shown in the accompanying table. _____________________ 3.85. 3.02. 6.16. 2.59. 3.71. 4.26. 8.07 3.63. 6.42. 1.37. 6.38. 7.89. 7.31. 1.19 _____________________ Based on the sampling of 14 customers, how much sampling...
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...
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:
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:3 2 5 6 1 5 3 4 5 2 4 5 9 5 1(a) Determine the mean and variance of the data set. (b) Is there an outlier in the data set? Justify your answer. (c) Suppose a selected customer is found to spend...
(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:
20% of all customers subscribe to phone service. 70% of all customers subscribe to internet service....
20% of all customers subscribe to phone service. 70% of all customers subscribe to internet service. 5% of all customers subscribe to only phone service. Let A be the event that a customer subscribes to phone service. Let B be the event that a customer subscribes to internet service. Of those individuals who subscribe to at least one of the two services, what proportion subscribe to both services. (round to three decimal places.)
The answers are in red. I just
want to know how to correctly solve this...
A hotel claims that 85% of its customers are very satisfied with its service. Complete parts a through d below based on a random sample of five customers. a. What is the probability that exactly four customers are very satisfied? 0.3915 (Round to four decimal places as needed.) b. What is the probability that more than four customers are very satisfied? 0.4437 (Round to four...
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...
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