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You just saw an ad on television that states the majority of the population would vote to make smoking illegal. The poll that is referenced shows 53% of those asked supported making smoking illegal. In the fine print at the bottom of the screen, you see that the margin of error is +/- 3%. What is your reaction? Explain.
To test whether the significant difference between two sample variance using F-tests.
a) What statistical test should be used to analyze these data? b) Identify H0 and Ha for this study. c) Conduct the appropriate analysis d) Should H0 be rejected? What should the researcher conclude?
Identify Independent and Dependent variable being investigated. Formulate the hypothesis statement regarding your research issue.
Public transportation and the automobile are two methods an employee can use to get to work each day. Samples of times recorded for each method are shown. Times are in minutes.
Computing the probability values using normal distribution - The data set has a bell-shaped distribution. Between what two prices do 68% of the houses lie?
Use given data to create the unbiased point estimate of 12σ'> 2 of percentage of termites that are minor workers.
The cost of one serving of peanut butter ( in cents) for a random sample of 19 jars of peanut butter was found to be:
Carry out a test of hypothesis on each of regression coefficients. Could you delete any of the variables?
You are considering adding a new food product to your store for resale. Explain how many units of the new product should be purchased for resale.
Compare these with the percentages specified by Tchebysheff's Theorem.
This sample group has errors with a standard deviation of 54.7ft. At the 5% level of significance, test that the new population has errors with a standard deviation equal to 43.7ft.
Find out the expected winnings for a person who buys one ticket.
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