A used-car dealer gets complaints about his cars as shown in the table:| Number of complaints per day | 0 | 1 | 2 | 3 | 4 | 5 | 6 ||------------------------------|-----|-----|-----|-----|-----|-----|-----|| Probability | 0.02| 0.06| 0.18| 0.24| 0.3 | 0.12| 0.08|Find the expected number of complaints per day.---The expected number of complaints per day is [ ]. (Do not round your answer.)

Answered: Image /qna-images/answer/1cb07281-a8ad-472f-8e5b-e94774a27342.jpgThe expected number of complaints per day is 3.42

Answered: A used-car dealer gets complaints about…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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A used-car dealer gets complaints about his cars as shown in the table. Number of complaints per day Probability 0 1 2 0.01 0.04 0.2 4 5 6 0.3 0.11 0.09 Find the expected number of complaints per day. The expected number of complaints per day is (Do not round your answer.) 3 0.25
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Find the probability and interpret the results. If convenient, use technology to find the probability. The population mean annual salary for environmental compliance specialists is about $61,000. A random sample of 38 specialists is drawn from this population. What is the probability that the mean salary of the sample is less than $58,000? Assume o = $6,500. ... The probability that the mean salary of the sample is less than $58,000 is (Round to four decimal places as needed.) Interpret the results. Choose the correct answer below. A. About 22% of samples of 38 specialists will have a mean salary less than $58,000. This is not an unusual event. B. Only 22% of samples of 38 specialists will have a mean salary less than $58,000. This is an unusual event. C. Only 0.22% of samples of 38 specialists will have a mean salary less than $58,000. This is an unusual event. D. About 0.22% of samples of 38 specialists will have a mean salary less than $58,000. This is not an unusual event.
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A used-car dealer gets complaints about his cars as shown in the table. Number of complaints per day 0 1 2 Probability 3 4 5 6 0.02 0.06 0.17 0.25 0.3 0.11 0.09 Find the expected number of complaints per day. The expected number of complaints per day is (Do not round your answer.)

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A used-car dealer gets complaints about his cars as shown in the table. Number of complaints per day Probability 0 1 2 3 4 5 6 0.02 0.06 0.18 0.24 0.3 0.12 0.08 Find the expected number of complaints per day. The expected number of complaints per day is. (Do not round your answer.) ...