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To test the effectiveness of a new type of plastic handcuffs, a law enforcement agency puts the cuffs on a sample of 30 persons who belong to the local weightlifting club.
None is able to break free from the cuffs. What type of sampling technique does this represent? Explain your reasoning.
the results from two factor experiment can presented in a matrix with levels if one factor forming the rows and the
in 1996 it was estimated that about 72 percent of all us households were cable tv subscribers. newstime magazines
Calculate the standard deviation of the number of available rooms in that sample. Use the central limit theorem to calculate and identify the sampling distribution of the sample mean.
The width of a 95% confidence interval for µ is 10 units.- If everything else stays the same, how wide would a 90% confidence interval be for µ?
a researcher has found that pilots taking an over the counter antihistamine have poor reaction times. they performed an
A coil of heavy open chain is used to reduce the stopping distance of a sled that has a mass M and travels at a speed of v0. Determine the required mass per unit length of the chain needed to slow down the sled to within a distance if the sled is ..
Construct an example of each of the following phenomena: (a) a Markov chain with only absorbing states; (b) a Markov chain that is irreducible but not regular;
Go to the Market Data section and then to Rates & Bonds, and you can click on a country to review its interest rates. Review the 1-year yields of currencies. Assume that you could invest at the quoted yield for each currency. Which currency would ..
In testing the independence of two variables described in a contingency table, determine the critical value of chi-square if the test is to be conducted at the
Some IQ tests are standardized to normal model with mean of 100 and the standard deviation of 16. Draw a model for these IQ scores, clearly label it , showing what the 65-95-99.7 rule predicts about the score.
Statistical questions tend to fall into what two main categories?
Discuss the use of standard deviation. Explain how it might be useful to you in your research and how you would explain results using standard deviation.
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