QUESTION 6:a) The death rate in a certain village follows a poison distribution with a proportion of 1death outof 10 per year. What is the probability that in 20 sample of the villagers in that year there willbe:i)ii)111)No deathAt least 4 deaths andExactly 6 deaths?

i) To find the probability that in 20 samples of the villagers in that year there will be no death,…

Answered: a) The death rate in a certain village…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A researcher asks random samples of residents of two separate counties as to whether they had purchased organically grown food in the last three months. He wants to determine whether the proportion of residents of one county who purchase organically grown food is greater than the proportion of residents of the second county who purchase organically grown food. Choose the appropriate test and name the population(s). a) Two-proportion z-test; one population is all adults who buy organically grown food and the other population is all adults who do not buy organically grown food. b) Two-proportion z-test; one population is all residents of the first county and the other population is residents of the second county. c) One-proportion z-test; the population is all residents of a state. d) One-proportion z-test; the population is all residents of the first county.
One hundred adults were randomly sampled and took their BMI and categorize them as Underweight, Normal Weight and Overweight. The data is summarized in the following table. If one of the hundred aults is randomly selected: a) What is the probability that they are 56+ or overweighted? b) What is the probability that they are underweighted or normal weighted? c) Is it correct to say that a randomly selected adult is 1.2 times as likely to be an overweighted as underweighted? Justify your answer.
B) What is the probability that daily production is more than 27.3 liters?
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2) Below is a table of the most popular fields and the count distributions of doctorates conferred to males and females in each of these fields. Subject Male Female Total Engineering 6527 1883 8410 Physical Sciences 6393 2551 8944 Life Sciences 5331 6698 12029 Social Sciences 3488 4861 8349 Education 1501 3297 4798 Humanities 2654 2847 5501 Other 1496 1425 2921 Total 27390 23562 50592
12). What is a percentile? In probability notation, how would you find the 85th percentile?
5. On average, there are 2 car thefts every 10 square kilometers during the course of a month in Shanghai. a. What is the probability that there will be no car thefts in a 10 square kilometer area next month? b. What is the probability that there will be 1 car theft in a 20 square kilometer area?

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a) The death rate in a certain village follows a poison distribution with a proportion of 1 death out of 10 per year. What is the probability that in 20 sample of the villagers in that year there will be: i) ii) 111) No death At least 4 deaths and Exactly 6 deaths?