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Question: Suppose a study were to find that twice as many users of nicotine patches quit smoking than nonusers. Suppose you are a smoker trying to quit. Which version of an answer to each of the following components would be more compelling evidence for you to try the nicotine patches? Explain.
a. Component 3. Version 1 is that the nicotine patch users were lung cancer patients, whereas the nonusers were healthy. Version 2 is that participants were randomly assigned to use the patch or not after answering an advertisement in the newspaper asking for volunteers who wanted to quit smoking.
b. Component 7. Version 1 is that 25% of nonusers quit, whereas 50% of users quit. Version 2 is that 1% of nonusers quit, whereas 2% of users quit.
A two tailed test is conducted at 5% significance level what is the P-value required to reject the null hypothesis.
Suppose you perform a hypothesis test relating to environmental toxins in a thriving small city in West Virginia. Discuss the risk to all interested parties in the scenario if you make a Type I error and if you make a Type II error
a computer manufacturer is introducing a new product specifically targeted at the home market and wishes to compare the
You want to know how the commuting time of your employees compare to Departments competing for the same staff, so you get some survey data on average commuting times for36 randomly selected people in your line of business.
The unmanned exploration of planets such as Mars requires a high level of autonomy because of the communication delays between robots in space and their Earth-based stations. This affects all the components of the system:
heres the question suppose that in a certain population of married couples 30 of the husbands smoke 20 of the wives
Explain what type of data is displayed in contingency tables. Explain how contingency tables and their related statistics are used to test for significance of relations among the data.
hand-calculate the sample size that will be required to detect an increase or decrease of 1.5sigma from the mean of one
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many customers complain because the declared lifetime of the light bulb you produce is 1000 hours while they seem to
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