Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
In the World Bank's World Development Indicators there is a population of 214 countries. These countries can be broken down into income categories (from lowest income to highest income):
Income Category
Count
Low Income (LIC)
34
Lower Middle Income (LMC)
50
Upper Middle Income (UMC)
55
High Income (HIC)
75
Total
214
Assume that the World Bank wants to take a simple random sample, n = 10, of these countries for a poll on how satisfied countries are, overall, with the Bank's work. Note that this sample will be "without replacement," i.e. once a country is chosen, it is "removed." For probabilities in this question, please show the math (fractions) you are using to solve the final probability. Please report your final answer for probabilities using three decimal places. PLEASE SHOW YOUR WORK.
a) What is the probability that a specific country will be included in the sample? (Hint: it may be easier to find this value by using the rule of complements.)
b) What is the probability that no HIC country will be included in the sample? What is the probability that "at least one" HIC will be included in the sample? (Note that these two outcomes are complements: "none" and "at least one.")
c) What is the probability that no LIC countries will be included in the sample? What is the probability that "at least one" LIC will be included in the sample?
One of the points is suspected of being a bivariate outlier. When this point is removed, the new correlation is r = -.833. Is this point likely to be a bivariate outlier?
A group of day to day workers can work either 0 hours, eight hours or 12 hours at a pay rate of $9.75 per hour. (The 12 hour day pays regular time for the first eight hours and double time for the remaining four hours.
Within what values will 95.44 percent of sample means of this process fall, if samples of n = 14 are taken and the process is in control (random)?
The Cancer Institute is evaluating a new drug for controlling lip cancer. Eighty-seven (87) patients are randomly selected and given the drug for one year. Sixty-eight (68) other patients are randomly selected and given a placebo for one year. The..
consider the probability function. give your answers correct to two decimal places. rx 0.2 for x 0 1 2 3 4 a find the
Let R be a unique factorization domain then show that prime element R generates a prime ideal.
the following problem should be answered in r. any answers partial or complete would be greaty appreicatedgenerate 50
A local hardware store claims that the mean waiting time in line is less than 3.5 minutes. A random sample of 20 customers has a mean of 3.7 minutes with a standard deviation of 0.8 minute. If α = 0.05, test the store's claim.
a box contains 10 chips. the chips are numbered 1 through 10. otherwise the chips are identical. from this box we draw
If a manufacturer charges x dollars each for soccer balls, then he can sell 3000 - 150x soccer balls per week. Find a polynomial that represents the revenue for one week.
Suppose that we are interested in the proportion of the 70 students in the lunchroom cafeteria that smokes. Is the normal approximation for the proportion p = r/n valid?
If an individual from this age group is selected, find the probability that his or her blood pressure will be between 70 and 95. Assume normal distribution.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd