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Define exponential function. Give an example of such function and graph it. Discuss what are common characteristics of all exponential functions. (i.e. domain/range/intercepts/asymptotes, general behavior)
Define logarithmic function. Give an example of such function and graph it. Discuss what are common characteristics of all logarithmic functions. (i.e. domain/range/intercepts/asymptotes, general behavior)
Comparing the results from (a) and (e), what happens to the required sample size when we increase the confidence level?
If a sample of 800 homes sold in 2004 is obtained what is the probability that between 175 & 200 homes are going to be investment?
Suppose that it is a presidential election year and Ohio is one of the 'swing' states. Your polling company wants to conduct a presidential preference poll of the citizens of Ohio to predict which candidate will win the election.
Using decision tree analysis, decide whether Jay must proceed with his law suit against manufacturer.
Did you find any outliers on the dependent variables that were due to errors of coding? If so, what and why? How would you correct an error of coding?
Test at 5% and 1% whether the molder is operating satisfactorily.
A government survey conducted to estimate the mean price of houses in a metropolitan area is designed to have a margin of error of $10,000.
Research shows that the life time of Everlast automobile tires is normally distributed with a mean value of 70,000 miles and a standard deviation of 7,000 miles. What is the probability of having a tire that lasts more than 80,000 miles?
An economic researcher would like to know whether he can reject the null hypothesis at the 0.10 level, that no more than 20% of the households in Pennsylvania make more than $70,000 per year.
Propose a two sample z-test of a population mean and identify it as either an independent test or a dependent test.
Find out the mean for your 3 numbers. They signify your neighborhood's news-viewing habits. Mean is number of news programs viewed in neighborhood each week.
Suppose that among workers exposed to asbestos in a shipyard in 1980, 33 died over a 10-year period from COPD, whereas only 24 such deaths would be expected based on statewide mortality rates. Is the number of deaths from COPD in this group excess..
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