←In your area, 27% of firms are owned by women. You call local firms at random in order to sell them accounting software. You phone 7 local businesses at random.a) What is the probability that 2 of the 7 are owned by women?b) What is the probability that at least 2 of the 7 are owned by women?c) What is the mean and standard deviation of the number of businesses owned by women?a) The probability is(Round to three decimal places as needed.)CCOO

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Answered: in your area, 27% of firms are owned by…

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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1. The probability that an albino rat will survive a medical experiment is 0.40. If ten animals are treated in the experiment, a. what is the probability that at least 8 will survive the experiment? b. what is the probability that at most 3 will survive the experiment?
10.2.% of the population is 65 or older . Find the probability that the following number of persons selected at random from 50 people are 65or older . The probability that at most 2 are 65 or older is ?
10.A hotel claims that 50% of its customers are very satisfied with its service. Answer the following questions based on a random sample of ten customers: What is the probability that exactly five customers are very satisfied? What is the probability that more than six customers are very satisfied? What is the probability that less than four customers are very satisfied?
10) According to the American Academy of Ophthalmology, there is a 45% chance that someone will have brown eyes. What is the probability that all of the next seven people selected will have brown eyes?
2. If there are 5 pieces of gum and 3 candies in a box and 3 of them are taken at random, generate the probability distribution for the number of candies that came out in the sample.
6. PLEASE HELP me answer this question well explained and calculated. 6.) The probability that a business person will cancel his reservation at the Place des Pins hotel is about 10%. Knowing that the hotel has 56 reservations. A.) determines the probability that at least 10 business people will cancel their reservation; B. determines the probability that exactly 2 business people will cancel their reservation. C.) determines the probability that 5 to 10 people in the business community will cancel their reservation.
Twelve doctors work at a clinic, of which 3 were trained at Harvard Medical School. Four doctors are randomly selected from the 12 clinic doctors to attend a special conference. A. What is the probability that at least one of the doctors going to the conference is a Harvard Medical graduate? B. Find the standard deviation for the number of doctors out of the 4 that were trained at Harvard Medical School.
Airline passengers arrive randomly and independently at the passenger screening facility at a major international airport. The mean arrival rate is 5 passengers per minute. 1. What is the probability of 2 arrivals in a 1-minute period? 2. What is the probability of no arrivals in a 1-minute period? 3. What is the probability of one arrival in a 1-minute period? 4. What is the probability of at most one arrival in a 1-minute period?
3. A company produces boxes of candy that contain a mean of 50 candies each. The standard deviation is 2. Quality control will reject any box with fewer than 48 candies. a) What is the probability that a box selected at random contains exactly 51 pieces? b) What proportion of the boxes will quality control reject as containing too few candies? c) The company produces 135 000 boxes of candy a day. How many of these boxes will have at least 48 candies but no more than 53?
2. A dance crew of 12 is to be randomly selected from 11 hip-hop dancers, 9 ballet dancers, 13 ballroom dancers and 7 break dancers. What is the probability of having 5 ballet dancers on the dance crew?
16. Ten percent of the students at a certain college are non-resident. A reporter for the student paper would like to interview at least 5 non-residents. If the reporter randomly selects 100 names from the student directory and begins contacting them, what is the probability that she will contact at least 5 non-resident students?

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