1. Assume a binomial distribution where n = 5 and p= 0.60
    a.List the probabilities for value of x from 0 to 5
    b.Determine the mean and standard deviation
    (Statistical Technique in Business and Economic., Lind,Marchal, Wathen., Mc Graw Hill., Fourteent Edition., page 197., number 12) Soal jawab distribusi binomial no 1- 9 April 2013
  2. The united states postal service reports 0.05 percent of first class mail within the same city is delivered within two days of the time of mailing. Six letter are randomly sent to different locations.
    a.What is the probability that all six arrive within two days?
    b.What is the probability that exactly five arrive within two days?
    c.Find the mean number of letters that will arrive within two days
    d.
    Compute the variance and standar deviation of the number that will arrive within two days
    (Statistical Technique in Business and Economic., Lind,Marchal, Wathen., Mc Graw Hill., Fourteent Edition., page 197., number 14) soal jawab distribusi binomial no 2 – 9 april 2013
  3. A telemarketer makes six phone calls perhour and is able to make a sale 30 pecent of these contacs. During the next two hour, find
    a.The probability of making exactly four sales
    b.The probability of making no sale
    c.The probability of making exactly two sales
    d.The mean number of sales in the two hour period
    (Statistical Technique in Business and Economic., Lind,Marchal, Wathen., Mc Graw Hill., Fourteent Edition., page 198., number 16) soal jawab distribusi binomial no 3 – 9 april 2013
  4. It is reported that 16 percent of American household use a cell phone exclusively for their telephone service. In a sample of eight households, find the probability that,
    a.None use a cell phone as their exclusively service
    b.At least one uses the cell exclusively
    c.At least five uses the the cell phone
    (Statistical Technique in Business and Economic., Lind.,Marchal., Wathen., Mc Graw Hill., Fourteent Edition., page 198., number 18) soal jawab distribusi binomial no 4 – 9 april 2013
  5. In binomial distribution n=12 and p=0.6. Find the following probabilities
    a.X = 5
    b.X = 5
    c.X = 6
    (Statistical Technique in Business and Economic., Lind,Marchal, Wathen., Mc Graw Hill., Fourteent Edition., page 200., number 20) soal jawab distribusi binomial no 5 – 9 april 2013
  6. A manufacturer of window frames knows from long experience that 5 percent of the production will have some of minor defect that will require adjustment. What is the probability that in a sampel 20 window frames,
    a.None will need adjustment
    b.At least one will need adjustment
    c.More than 2 will need adjustment
    (Statistical Technique in Business and Economic., Lind,Marchal, Wathen., Mc Graw Hill., Fourteent Edition., page 200., number 22) soal jawab distribusi binomial no 6 – 9 april 2013
  7. If it asserted that 80 percent of the cars approaching on individual toll both in Jersey are equipped with an E-Zpass transponder. Find the probability that in a sample of six cars
    a.All six will have transponder
    b.At least three will have the transponder
    c.None will have the transponder
    (Statistical Technique in Business and Economic., Lind,Marchal, Wathen., Mc Graw Hill., Fourteent Edition., page 200., number 24) soal jawab distribusi binomial no 7 – 9 april 2013
  8. Menurut suatu penelitian, sekitar 60% pengguna valium disuatu daerah mula-mula menggunakan valium karena persoalan psikologi. Cari peluangnya bahwa diantara 8 pasien yag diwawancarai bahwa :
    a)tepat 3 pasien mula-mula menggunakan valium karena persoalan psikologi
    b)paling sedikit 4 pasien mula-mula menggunakan valium karena persoalan psikologi
    c)paling banyak 2 pasien mula-mula menggunakan valium karena persoalan psikologi
    d)Paling sedikit 2 pasien dan paling banyak 4 pasien mula-mula menggunakan valium karena persoalan psikologi
    e)Paling sedikit 5 pasien mula-mula menggunakan valium bukan karena persoalan psikologi
    (Ronald E Walpole, Raymond H Myers., Ilmu Peluang dan Statistika untuk Insinyur dan Ilmuwan., Penerbit ITB., Edisi Keempat., hal 138., nomor 3 dengan penambhan) soal jawab distribusi binomial – 9 april 2013 – no 8

  9. Peluang seseorang penderita sembuh dari suatu penyakit darah yang jarang muncul adalah 0.4. Bila diketahui ada 100 orang yang telah terserangan penyakit ini, berapa peluangnya bahwa kurang dari 30 yang sembuh ?
    (Ronald E Walpole, Raymond H Myers., Ilmu Peluang dan Statistika untuk Insinyur dan Ilmuwan., Penerbit ITB., Edisi Keempat., hal 185) soal jawab distribusi binomial – 9 april 2013 no 9
  10. Peluang seseorang lulus ujian praktek mengendarai mobil adalah 0.6. Carilah peluang seseorang yang lulus
    a.Pada ujian yang ketiga
    b.Sebelum ujian keempat
    (Ronald E Walpole, Raymond H Myers., Ilmu Peluang dan Statistika untuk Insinyur dan Ilmuwan., Penerbit ITB., Edisi Keempat., hal 157 nomor 7) soal jawab distribusi binomial – 9 april 2013- no 10
  11. Carilah peluang seseorang yang melemparkan satu uang logam akan mendapatkan
    a.Paling sedikit tiga muka pada 7 kali lemparan
    b.Muka yang ketiga pada lemparan ketujuh
    c.Muka yang pertama pada lemparan keempat
    (Ronald E Walpole, Raymond H Myers., Ilmu Peluang dan Statistika untuk Insinyur dan Ilmuwan., Penerbit ITB., Edisi Keempat., hal 157 nomor 4 dengan tambahan) soal jawab distribusi binomial – 9 april 2013- no 11
  12. Tire and Auto Supply is considering a 2 for 1 stock split. Before the transaction is finalized, at least two-thirds of the 1,200 company stockholders must spprove the proposal. To evaluate the likelihood the proposal will be approved, the CFO selected a sample of 18 stockholders. He contacted each and found 14 approved of the proposed split. What is the likelihood of this event, assuming two-third of the stockholders approve ?
    (Lind, Madrchal, Wathen., Staistical Techniques in Business and Economics., mc Graw Hill., Gourteenth Edition., p. 211., number 46) soal jawab distribusi binomial no 12 – 6 mei 2013
  13. The Bank of hawai reports that 7 percent of its credit card holders will default at some tome in their li9fe. The Hillo branch just mail out 12 new cards today
    a.How many of these new cardholders would you expect to default ? What is the standard deviation ?
    b.What is the likelihood that none of the cardholders will default ?
    c.What is the likelihood at least one will default ?
    (Lind, Madrchal, Wathen., Staistical Techniques in Business and Economics., mc Graw Hill., Gourteenth Edition., p. 211., number 48) soal jawab distribusi binomial no 13 – 6 mei 2013
  14. In chapter 19 we discuss the acceptance sample. Acceptance sampling is used to monitor the quality of incoming raw materials. Suppose a purchaser of electronics components allows 1 percent of the component to be defective. To ensure the quality of incoming parts, a purchaser or manufacturer normally samples 20 parts and allows 1 defect
    a.What is the likelihood of accepting that 1 percent defective ?
    b.If the quality of incoming lot was actually 2 percent, what is the likelihood of accepting it?
    c.If the quality of incoming lot was actually 5 percent, what is the likelihood of accepting it?
    (Lind, Madrchal, Wathen., Staistical Techniques in Business and Economics., mc Graw Hill., Gourteenth Edition., p. 211., number 50) soal jawab distribusi binomial no 14 – 6 mei 2013

  15. Dr Richmond, a Psychologist, is studying the daytime television viewing habits of college students. She believe 45 percent of college students watch soap operas during the afternoon. The further investigate, she select a saple of 10.
    a.   Develop a probability distribution for the number of the number of students in the sample who watch soap operas
    b.   Find the mean and standard deviation of this distribution
    c.    What is the probability of finding exactly four watch soap operas
    d.   What is the probability less than half of students selected watch soap operas
    (Lind, Madrchal, Wathen., Staistical Techniques in Business and Economics., mc Graw Hill., Gourteenth Edition., p. 211., number 52)soal jawab distribusi binomial no 15 – 6 mei 2013

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