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Foreign trade is important to the United States. No country exports and imports more. However, there has been a large trade imbalance in many sectors. To measure the extent of the prob- lem, an economist recorded the difference between exports and imports of merchandise (excluding mil- itary) for the years 1980 to 2012.a. Plot the trade balance.b. Apply regression analysis to measure the trend.
Suppose Ana has a pair of dice (the traditional six-sided kind). Let X= the difference of the largest minus the smallest number showing on the dice. Find the PMF for X.
Heights of swedish men follow a normal distribution with mean 72 in and standard deviation of 5 in. How high must a doorway be so that 90% of swedish men can go through without having to bend?
Psychomotor retardation scores for a large group of manic-depressive patients were approximately normal, with a mean of 930 and a standard deviation of 130. What fraction of the patients scored: a) between 800 and 1,100? b) less than 800? ..
Westhouser believes that it on make $650.000 from alternative Investments. What should the company do - houscr does not take advantage of Its current op-don, it can attempt to buy the land at the beginning of June or the beginning of July. provided ..
According to a survey by Accountemps, 48% of Canadian executives within medium sized companies believe that employees are most productive on Tuesdays. Suppose 200 executives are randomly surveyed.
Determine the posterior probabilities, given the following prior and likelihood probabilities.Prior probabilities P(s1) = .25 P(s2) = .40 P(s3) = .35 Likelihood Probabilities
The portfolio assets are inverted in the Dow Jones fund
Develop a regression model and complete appropriate analysis of the three largest U.S. Air carriers
You are expected to complete a project related to inferential statistics - show that the random variable X is exponential and compute the probability of the wait time when it is greater
Fast Computers Inc. supplies made-to-order personal computers through direct (telephone and online) sales channels. A key competitive feature of its business is the delivery time - the time lapse between receipt of an order and final delivery t..
The company wants to perform a hypothesis testing. Which of the following are the right hypotheses and what is the α-risk associated with the x' chart?
problem1 1. using if filter the data for these students into a column which contains the heights of only female
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