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The proportion of smokers among college students is known to be about 18%. Twenty five students out of 100 from a nearby college were found to be smokers. Can you conclude that there is a higher proportion of smokers in this college compared to the entire college student community? Justify your answer by statistical reasoning.
Executive MBA programs have become increasingly popular. In an article titled "The Best Executive MBAs," Business Week provided data concerning the top 25.
Explain why you might expect the population distributions of these two variables to be highly skewed to the right
question what hypothesis tests would you apply to the following four situations and specify your reasons why
The ECCO company makes backup alarms for machinery like forklifts and commercial trucks. When a customer returns one of the alarms under warranty.
The American Sugar Producers Association wants to estimate the mean yearly sugar consumption. A sample of 16 people reveals the mean yearly consumption to be 60 pounds with a standard deviation of 20 pounds.
Suppose a newspaper article states that the distribution of auto insurance premiums for residents of California is approximately normal with a mean.
Discuss the process of hypothesis testing, including the steps.
What are the Principle Functions of Parties? How do political parties get on the ballot?
The data in the table on p. 624 were collected for a random sample of 26 households in Washington, D.C., during 2000. An economist wants to relate household food consumption, y, to household income, XI, and household size, x,, with the first-order..
q1. a research shows that employee salaries at company xyx in thousands of dollars are given by the equation y-hat 48.5
Your paper should in 500- 600 words 1) summarize the statistical methods that the researchers used in their article and 2) evaluate those statistical methods. Were the techniques they picked (correlation, hypothesis testing, regression, for exampl..
a. Did the sample of Valproate-takers have a lower percentage engaging in heavy drinking?
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