**Problem 2: Probability of Properly Working Solar Power Packages**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?

Answered: Image /qna-images/answer/ee1c2434-654a-41dd-9095-5981c9fbb186.jpg

Answered: 2. It has been found that 80% of all…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Similar questions

A customer relations manager at SARS observes that a teller can serve, on average,15 clients in an hour. Calculate the probability that the teller serves More than 14 but less than 17 clients in a particular hour. Interpret your answer.
According to a survey, 28.5% of credit-card-holding families in a certain area hardly ever pay off the balance. Suppose a random sample of 29 credit-card-holding families is taken. Find the probability that at least 7 families hardly ever pay off the balance.
Assume that when silts with smartphones are randomly selected 37% use them in meetings or class. IF 6 adult smartphone users are randomly selected, find the probability that exactly 4 of them use their smartphones in meetings or classes.
Radio frequency identification (RFID) is an electronic scanning technology that can be used to identify items in a number of ways. One advantage of RFID is that it can eliminate the need to manually count inventory, which can help improve inventory management. The technology is not infallible, however, and sometimes errors occur when items are scanned. The probability that a scanning error occurs is 0.0069. 1. Find the probability that the number of items scanned incorrectly is between 16 and 20 , inclusive, from the next 5100 items scanned. *Kindly explain the procedure in Excel for this* A) The probability is (Round to four decimal places as needed.) 2. Find the expected number of items incorrectly from the next 5100 items B) The probability is (Round to four decimal places as needed.)
Four out of five Filipinos under the age of 30 eat rice for breakfast. If a random sample of 15 adults under age of 30 is selected, find the probability that at least 10 have eaten rice for breakfast.
Assume that a student alarm clock has a 6.6 % daily failure rate. What is the probability that the students alarm clock ill not work on the day of an important final exam?
Suppose that 20% of fruit flies possess a certain gene. If we randomly select 20 fruit flies, find the probability that at least 5 flies in the sample possess the gene. You may assume sampling with replacement.
A survey showed that 79% of adults need correction (eyeglasses, contacts, surgery, etc.) for their eyesight. If 15 adults are randomly selected, find the probability that at least 14 of them need correction for their eyesight. Is 14 a significantly high number of adults requiring eyesight correction? The probability that at least 14 of the 15 adults require eyesight correction is nothing. (Round to three decimal places as needed.)
Suppose a basketball player makes 57.7% of shots and that the probabilty of making each shot is independent. If the basketball player attempts 3 shots, what is the probability of making at least one shot? Enter your answer rounded to at least 4 decimals.
Based on observation 85% of the population of adult males wash their hands in a public restroom. In a survey of 523 adult males, 518 reported they washed their hands when using a public restroom. Find the probability that among 523 randomly selected adult males 518 or more wash their hands in a public. restroom. Does it appear that all the people who claimed they washed their hands were telling the truth?
Suppose that 20% of fruit flies possess a certain gene. If we randomly select 20 fruit flies, find the probability that at least 7 flies in the sample possess the gene. You may assume sampling with replacement.

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