Question 3:Warranty records show that the probability that a new computer will need warrantyservice in the first 90 days is 0.20.a) If a sample of five computers is selected, what is the probability that one of them willrequire service in the first 90 days?b) If a sample of four computers is selected, what is the probability that one of them willrequire service in the first 90 days?

Given that, Warranty records show that the probability that a new computer will need warranty…

Answered: Warranty records show that the…

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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17) Assume that when adults with smartphones are randomly selected 37%use them in meetings or classes. If 7 adult smartphone users are randomly selected, find the probability that exactly 4 of them use their smartphones in meetings or classes. The probability is ______.
A specific apple disease cannot be detected without dividing the apple. In a particular apple batch where the disease occurs, the probability that a random selected apple is infected is set to 0.15. 15 apples are picked random from the apple batch. What is the probability that a) none of the apples are infected. b) one or more of the apples are infected?
8
According to CTIA, 41% of all U.S households are wireless-only households (no landline). In a random sample of 20 households, what is the probability that- a) Exactly 5 are wireless-only b) Fewer than 3 are wireless-only c) At least 3 are wireless-only d) The number of households that are wireless-only is between 5 and 7, inclusive?
2. It has been found that 80% of all solar power packages work properly at the time of installation. The rest require some adjustment. A particular company sells 10 packages a month. a) Find the probability that at least 9 of the packages work properly upon installation. b) Consider 5 months in which 10 packages are sold each month. What is the probability that at least 9 packages work properly in each of the 5 months?
The survey by the National Center for Health Statistics further found that 49% of adults ages 25–29 had only a cell phone and no landline. We randomly select four 25–29-year-olds: a) What is the probability that all of these adults have a only a cell phone and no landline? b) What is the probability that none of these adults have only a cell phone and no landline? c) What is the probability that at least one of these adults has only a cell phone and no landline?
A Gallup poll of 1,236 adults showed that 14% believe that bad luck follows if your path is crossed by a black cat. a) Find u, o?, o, and usual values. b) Use the above information to find the probability that a total of 203 subjects believe that bad luck follows if your path is crossed by a black cat. a) Use the above information to find the probability that less than 203 subjects believe that bad luck follows if your path is crossed by a black cat.
Suppose that one third of the new buildings in Centra City are in violation of the building code. If a building inspector inspects 5 of the buildings, chosen at random, what is the probability that exactly 3 of the buildings will pass inspection? Round your answer to 3 decimal places!
8.) A lot of 200 nylon connectors contain 60 that are defective. Two are selected at random, without replacement from the lot. Determine the probability that the second nylon connector is defective
c. In a poll, 500 individuals of different ages were asked to specify if they are in favour of a newly proposed law. The poll results, categorized by age group, are displayed in the following table: In Favour? \ Age Group Yes No Unsure 16-39 98 43 32 40-59 72 75 19 Find the probability that an individual picked at random: is older than 39 and is in favour of the proposed law; i. ii. is against the proposed law given that they fall in the age group 40-59; iii. falls in the age groups below 60 years given that they are unsure. 60+ 56 84 21
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