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A research showed that the average rate of renting a car in Marrakech is 884.2 dhs and the average in Casablanca is 806.1 dhs. The mentioned data was obtained by taking two samples of 50 rental agencies in each city and that the standard deviation of the population is 56.2 dhs and 48.3 dhs of Marrakech and Casablanca respectively. At α = 0.05, can it be concluded that there is a difference in the rates of both cities?
Computer-generated output indicates that the p-value for the sample is 0.01. Carefully interpret this p-value. At what levels of significance would you reject the null hypothesis?
Find the mean and the median of the number of items. Find the range and the standard deviation of the number of items.
Use the most appropriate model to forecast daily stock price for March 1, 2011.
Determine whether the following definitions are stipulative, lexical, precising, theoretical, or persuasive.- "Smoker" means a rude and disgusting individual who callously emits noxious tobacco fumes into the air, threatening the health and comfort..
suppose the union station in chicago a large train station contains on average 20000 people. assume trains and people
What hypotheses should be tested, in terms of p, the true proportion of students who have missed a test because they overslept, in order for college officials.
A taxi company is interested in the amount of time its vehicles are out of operation for repair. Find a 95% confidence interval for the mean number
What is the probability that the sample mean will be at least 1000? Do you need to use the central limit theorism to answer this question? explain.
find the sample size needed to estimate the percentage of adults who have consulted fortune tellers. use a 0.03 margin
Brain cancer is a rare disease. In any year there are about 3.1 cases per 100000 od population. Suppose a small medical insurance company has 150000 people on its books.
define or give an example of a hypothetical construct which include an explanation why operational definitions are
Compute b1, slope of an OLS regression line using dollars spent as dependent variable (Y) and age as independent variable (X).
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