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The mean and the standard deviation of the sample of 40 trash bag breaking strengths are 50.575 and 1.6438, respectively. ( 1) Test H 0 : m 50 versus H a : m 50 by setting a equal to .05 and using a critical value rule. ( 2) Interpret the ( computer calculated) p- value of .0164 for the test. That is, explain how much evidence there is that H 0 is false.
a new phone answering system installed by the ohio power company is capable of handling 5 calls every ten minutes.
a primatologist believes that rhesus monkeys possess curiosity. she reasons that if this is true then they should
suppose that you work for the child social services agency in your county. your job is to investigate instances of
the average weekly stock prices of overseas trading inc. a u.s. based multinational company can be estimated from
The variance is any different with the new ball. Test the null hypothesis that the new ball does not improve a bowler's average at the 5% level of significance.
a random sample of records of electricity usage of homes gives the amount of electricity used in july and size in
Students given exam with 300 multiple questions, distribution was normal and mean 195 with a standard deviation of 30. What were the scores of the students who are within one standard deviation of the mean?
suppose that 67 of the employees of a company participate in the companys medical savings program. let x be the number
One measure of the overall sampling error in the entire distribution of sample means is the
The following table gives the coal usage and electricity generated by ten randomly selected power stations in South Africa in 1992:
CASE STUDY: Are the Fish Safe to Eat? Assessing which Factors affect Mercury Levels in Fish in Maine Lakes.
which of the following would produce a standard error of 2 points? explain your response.n 25 scores from a population
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