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Suppose you were in charge of advertising for an automotive dealership when the gas prices increased to $4 per gallon. Most of your cars are fuel-efficient, but you have two models that have extremely poor fuel economy, that is, a low number of miles per gallon. How would you use a measure of central tendency in your advertising to present your product line in the best light? Why would you choose this measure of central tendency? What circumstances would make you choose an alternative measure? Specify the circumstances and the measure you would use.
From Company B, 850 stereos are purchased and 6% are found to be defective. Given that a stereo is defective, find the probability that it came from Company A.
What is the probability that the first order will come on the fourth sales call of the day? Please show work and round to 4 decimal places.
Drawing the standard normal curve and indicating the area representing the probability and
Construct a 90% confidence interval for the population proportion, p, in order to test the claim from a confidence interval point of view. What is the best point estimate for p?
The grades of 20 students are listed in the stem and leaf diagram below. What is the probability of randomly selected student to have a grade more than or equal to 60 and less than or equal to 80.
When the effect of a level for one factor depends on which level of the other factor is present, use: Select one:
Compute z values for each and comment on your findings.
First explain what the Gini coefficient is and what hypothetical Gini values of 0 and 1 mean. Sort the data by the Gini coefficient in 2000 and look at the list of countries.
Distributed with mean 4.6 minutes and standard deviation 1.4 minutes. If there are 75 students in class, determine probability the professor requires more than 6 hours to mark all of the midterms?
Give an example of a hypothesis test you could perform at work or at home. State what the Null and the Alternative hypotheses would be in your test.
Suppose probability that person has desease is 0.06 for all people, independently of each other, and calculate expected number of tests essential for each group.
What is the probability that a roulette ball will come to rest on an even number other than 0 and 00?
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