Estimate for the standard error of difference
Calculate the estimate for the standard error of difference between two independent means for s12 = 13, s22 = 20, n1 = 22, and n2 = 30. (Give your answer correct to two decimal places.)
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What is the probability that she will get the message "Sorry, try again," at least seven times? What is the expected number of prizes?
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An Other Frame moves with a speed of 0.95 relative to the Home Frame. An object at rest in the Other Frame has a length of 30 ns as measured in the Home Frame. What is the object's length in the Other Frame?
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At the a=.05 level of significance, what is the difference, if any, in the population mean times among the four machines? Use Fisher's LSD procedure to test for the quality of the means for machines 2 and 4. Use a .05 level of sginificance.
Find the following percentiles for the standard normal distribution. Interpolate where appropriate. (Round your answers to two decimal places.)
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