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Consider the population consisting of all married couples in the United States. When n = 250, what is the probability that the proportion of couples in the sample who are racially or ethnically mixe
Suppose that the test statistic is z0=2.75 based on a sample size of n=25. Assume that data are normal with mean mu and standard deviation sigma=2.5. What is the sample mean xbar.
Total claims on different days each have this distribution and they are probabilistically independent of one another. Round your probabilities to 3 decimal points. a)Find the probability that the am
Compute the conditional probability that the first card selected is a spade, given that the second and third cards are spades.
an insurance company will insure a$50000 diamond for its full value againtst theft at a premium of $400 per year. Suppose that the probanility that the dimond will be stolen is .005, and let x denot
The company has a 25% cost of capital. a. Find the optimal order quantity. b. How many orders are placed annually? c. How frequently will orders be placed?
The 1996 GSS asked, "If the husband in a family wants children, but the wife decides that she does not want any children, is it all right for the wife to refuse to have children?" 82.7% said yes.(a)
A math course has 2 sections. Section one has 55 students of which 10 received an A. Section two has 45 students of which 11 received an A. What is the probability that the student was in section one
at theAir Force Academy purchased some randomly selected bags of cookies and counted the chocolatechips. Some of their data are given below. (adapted from [De Veaux et al. 2006]) 1219 1214
Identify the level of measurement (nominal, ordinal, interval, ratio) for the number of shares held by stockholders.
Assuming that the possibility of being seated at the two restaurants are independent of each other, what is the probability that Tres Chic will be able to seat you, but PeptoB won't?
A part randomly chosen is inspected and found to be acceptable. At this point, what is the posterior probability that the lathe tool is properly adjusted?
As a company manager for XYZ Corporation there is a 0.65 probability that you will be promoted this year. There is a 0.75 probability that you will get a promotion or a raise. The probability of get
Random variables with mean 2.5 minute and standard deviation of 2. What is the approximate probability that it will take more than 4 hours to process the orders of 100 people?
If we know that exactly 8 hurricanes will happen during the next 10 years, what is the probability that at least one offshore facility experiences some serious damage?
consider a service center consisting of two servers, each working at an exponential rate of two customers served per hour. assume customers arrive to service center according to a possion rate of th
The end of each week is 0 or 1, two additional cameras will be ordered. Otherwise, no ordering will take place. Find the steady-state probabilities of the state of this Markov chain.
percent of the employees in a company have managerial positions, and 42 percent of the employees in the company have MBA degrees. Also, 77 percent of the managers have MBA degrees. Using the probabi
What would happen if, after seeing the test value, she decided to choose sigma = 0.05? What would the decision be? Explain the contradiction, if there is one.
If you are following up your correlation analysis with, say, factor analysis of cluster analysis, then a .6 or better correlation makes these subsequent analyses more valid.
a botanist is testing three plants and finds that the prob of plant A being alive within a weak is 0.3 plant B is 0.6 and plant C 0.5 these probability are indipendant of each other.
The U.S. Dairy Industry wants to estimate the mean yearly milk consumption. What is the value of the population mean ? What is the best estimate of the value?
A physician may confer with a parent by telephone, and simply call a pharmacy with a prescription for an antibiotic. Suppose parents are correct 90% of the time and 10 families with a child sufferin
Suppose you have the vector 2 0 1 8 6 7 5 3 0 9 and then you take the log of the vector. What result do you get when R attempts to compute the log of zero?
Assuming that uncomplicated human gestation varies according to a Normal distribution with . What is the probability that an uncomplicated pregnancy selected at random lasts 41 weeks or fewer?