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In a two-tail hypothesis test, if you use .10 level of significance what is the decision rule for rejecting a null hypothesis that the population mean is 500 if you use the Z test?
A random sample of 48 managers of large hotels has mean X‾= 5.91. The null hypothesis for the researcher's test is?
spelling errors in a text are either nonword errors or word errors. a nonword error produces a string of letters that
Tests on a certain battery have determined that the mean (average) time until failure is 40 hours. Assume that the time T until failure of the battery is exponentially distributed. What is the probability that the battery will fail within 40 hours
Your poster should highlight the problem and its motivation, your approach and principal contributions, the results of your experiments, and any major take-aways for the future - development of your statistical analysis, including a mathematical f..
jim is in the 23rd percentile rank and jessica is in the 59th percentile rank. the variable is age and not at all
The standard deviation is $10,000, can the president conclude that there is difference? At a =0.10, is he correct? The hypotheses and the claim.
a random sample of size 36 is selected from a population whose mean is 70 and standard deviation is 6. calculate the
Known that 15% of walls painted with this paint need more than 55 minutes to dry completely. Find the standard deviation of this distribution.
Determine the MAPDi and MSEi value of the two methods for i = 1,...,8, as well as the Tracking Signal Si of the two methods. Based on this information, determine whether it is possible to safely use one method or the other.
At the .01 significance level, can we conclude that there is more variation in the selling prices of the oceanfront homes?
prepare a 2 slide microsoft powerpoint presentation with speaker notes how to use a z-test to test the null hypothesis
Find the stationary points
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