Question 3: (1 mark for each part) The percentage of coronavirus (COVID-19) infected people in a...
Question 3: (1 mark for each part) The percentage of coronavirus (COVID-19) infected people in a certain city is 15%. Suppose that we randomly select a sample of 6 people from this city. a) Find the probability that there will be one infected person in the sample. b) Find the expected number of infected people in the sample (E(X) = ?). c) Find the variance of the number of infected people in the sample (? 2 )
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Question 3: (1 mark for each part) The percentage of coronavirus
(COVID-19) infected people in a...
The percentage of coronavirus (COVID-19) infected people in a certain city is 15%. Suppose that we...
The percentage of coronavirus (COVID-19) infected people in a certain city is 15%. Suppose that we randomly select a sample of 6 people from this city. a) Find the probability that there will be one infected person in the sample. b) Find the expected number of infected people in the sample (E(X) = ?). c) Find the variance of the number of infected people in the sample (? 2 )
Question 1. 50 points Here we want to model the spread of the COVID-19 epidemic! Assume...
Question 1. 50 points Here we want to model the spread of the COVID-19 epidemic! Assume that ENCE112 Country get it first infection from a gentleman who flew in from China-Town, Wuham. Assume also that each without isolation, any covid-19 patient infects one other person. If we assume that each covid-19 infected person is isolated after just one day. a. Derive a recursive formula for the number of infected persons in n-days. 10 points b. Develop a recursive algorithm for...
RBV testing Suppose that 1% of all people are infected with the rare banana virus (RBV)....
RBV testing Suppose that 1% of all people are infected with the rare banana virus (RBV). There is a test to detect the RBV: if you do have the RBV, then the test will correctly detect this 99% of the time; if you do not have RBV, then the test will correctly indicate this 97% of the time. We assume that if the RBV test is given repeatedly to the same person, then the test results are independent of cach...
1. Suppose that 81% of the people in Houston live in the city and 19% of...
1. Suppose that 81% of the people in Houston live in the city and 19% of the people live in the suburbs. If the 21,000 undergraduate students from UH represent a random sample of the population, what is the probability that the number of UH undergraduates are from suburbs will be fewer than 4,000? (Hint: Apply normal approximation to binomial probability via CLT.) 2. Suppose that the body mass index (BMI) measure for adults is normally distributed with mean 21.7...
1.The number of people sick from imported meat products in a certain city was found to...
1.The number of people sick from imported meat products in a certain city was found to be normally distributed with mean and standard deviation: X≈N(U=190, σ =22). What is the probability that the number sick next month in that city would be between 175 and 194? Select one: a. 0.3231 b. 0.1803 c. 0.1769 d. 0.6769 2.The number of people getting sick from imported meat products in a certain city in one month was found to be normally distributed with...
3) 100 people are all wearing name tags, and no two people share the same name....
3) 100 people are all wearing name tags, and no two people share the same name. They decide to randomly permute their name tags. We will compute the expected number of people who get their name tag back, as well as the variance a) Let X be the indicator random variable for the it person getting their original name tag back. Find EX and E equal to j separately) consider the cases i and i not b) Let X be...
census data doe a certain county show that 19% of the adult residents are hispanic. suppose 72 people are called for ju...
census data doe a certain county show that 19% of the adult
residents are hispanic. suppose 72 people are called for jury duty
and only 9 of them are Hispanic. Does this allarent
under-representation of Hispanics call in to question the fairness
of the jury selection system?
Census data for a certain county show that 19% of the adult residents are Hispanic. Suppose 72 people are called for jury duty and only 9 of them are Hispanic. Does this apparent...
1: Suppose that you take a random sample of 300 people and find that 102 of...
1: Suppose that you take a random sample of 300 people and find that 102 of them say they prefer to buy organic food whenever possible, even if it’s more expensive. What is the sample proportion of people who prefer to buy organic? What is the standard deviation of the sample proportion? Calculate a 95% confidence interval for the population proportion. Do you reject the null hypothesis: p = 40%? Do you reject the null hypothesis p = 30%? 2:...
Morgano qu e response Question 19 032 Question 19 3 points Save The following table represents...
Morgano qu e response Question 19 032 Question 19 3 points Save The following table represents the probability distribution of the number of vacations x taken last year for a randomly chosen family. Compute the standard deviation. [3 Mark] 1.24 2.15 6 1.5275
1.Suppose we have two bowls full of candies. Each bowl contains four different flavours of candy...
1.Suppose we have two bowls full of candies. Each bowl contains four different flavours of candy – grape (which are purple), lemon (which are yellow), cherry (which are red) and raspberry (which are also red). (a) [1 Mark] We will randomly select one candy from each bowl. The outcome of interest is the flavour of each of the two candies. Write out the complete sample space of outcomes. (b) [1 Mark] Suppose instead that we randomly select one candy from...
RBV testing Suppose that 1% of all people are infected with the rare banana virus (RBV). There is a test to detect the RBV: if you do have the RBV, then the test will correctly detect this 99% of the time; if you do not have RBV, then the test will correctly indicate this 97% of the time. We assume that if the RBV test is given repeatedly to the same person, then the test results are independent of cach...
1. Suppose that 81% of the people in Houston live in the city and 19% of the people live in the suburbs. If the 21,000 undergraduate students from UH represent a random sample of the population, what is the probability that the number of UH undergraduates are from suburbs will be fewer than 4,000? (Hint: Apply normal approximation to binomial probability via CLT.) 2. Suppose that the body mass index (BMI) measure for adults is normally distributed with mean 21.7...
3) 100 people are all wearing name tags, and no two people share the same name. They decide to randomly permute their name tags. We will compute the expected number of people who get their name tag back, as well as the variance a) Let X be the indicator random variable for the it person getting their original name tag back. Find EX and E equal to j separately) consider the cases i and i not b) Let X be...
census data doe a certain county show that 19% of the adult
residents are hispanic. suppose 72 people are called for jury duty
and only 9 of them are Hispanic. Does this allarent
under-representation of Hispanics call in to question the fairness
of the jury selection system?
Census data for a certain county show that 19% of the adult residents are Hispanic. Suppose 72 people are called for jury duty and only 9 of them are Hispanic. Does this apparent...
Morgano qu e response Question 19 032 Question 19 3 points Save The following table represents the probability distribution of the number of vacations x taken last year for a randomly chosen family. Compute the standard deviation. [3 Mark] 1.24 2.15 6 1.5275
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