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Question: The data provided in https://www.wiky.corn/college/ashenfelter contain information on the un-employment rate (monthly and seasonally adjusted) from 1951 through 1999 with a year variable.
a. Estimate an AR(I) model. Test for first-order serial correlation. Conduct the estimation excluding the three most recent years. Using the models parameter estimates, perform an "in-sample" prediction for those three periods. How well does the model do?
b. Repeat part (a) using an AR(2) model. Which model do you prefer?
Assume you are in charge of a production line which allows for no more than 1% defectives in order to be in compliance. A random sample of 500 is tested and 4 defective items are found. Find the probability of getting exactly 4 defectives out of..
question an opportunity sample of 50 undergraduate students was asked to complete a series of personality
In 1990, the population of Austin, Texas, was 494,290. During the next 10 years, the population increased by about 3% each year.
using two independent samples we test for a hypothesized difference between two population means. the population
use a binomial random variable x with n 5 and p 0.4a calculate the probability that x equals threeb determine the
Let Un and Vn converge in probability to c and d, respectively. Prove the following. (a) The sum Un + Vn converges in probability to c + d.
Given your findings in part a, determine any significant differences among the response means of the levels of factor A for level 1 of factor B.
If you randomly select 3 vials from the shipment, in how many ways can at least one of the 3 selected vials have a hairline crack if the order of selection does not matter?
Find the number of viewers that represents the 75th percentile and on one particular night, 24 million people watched 60 minutes. Is this unusual?
A small private midwestern university has been accused of favoring male applicants in its admissions process.
a population is normally distributed with mean 50 and standard deviation 10 and sample mean 50. what are the mean and
at a raffle 10000 tickets are sold at 10 each for three prizes valued at 4800 1200 and 400. what is the expected value
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