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A student takes a 20-question multiple choice exam and guesses on each question. Each question has 4 choices, only one of which is correct. Find the probability that the student makes at least a "B" assuming that in order to make at least a "C" the student must score at least 70%.
What are the hypotheses we would want to test for the Kleenex case?
Do the data indicate a significant difference between the frequency distributions for male and females? Test at the .05 level of significance and describe the difference.
For monthly volume of 300 tables, find out total cost, total revenue and profit.
What additional strategies (up to 3) you would propose that may increase validity of the findings.
Compute a 5-month moving average forecast for June through January.
Which measure of association do you use to compare the relationship between these variables? Why?
In 2006, the Florida poll conducted by Florida International University asked whether current environmental regulations are too strict or not too strict. Of 1200 respondents. 229 said they were too strict. Find and interpret a (a) 95%. (b) 99% con..
Compare and contrast probability and non-probability sampling. What are the advantages and disadvantages of each?
Will the margin of error for estimating the population proportion change from state to state if an SRS of 4000 tax returns is selected in each state?
Is 0.21, the probability that his wife will vote in the referendum is0.28, and the probability that both the husband and wife will voteis 0.15. What is the probability that: at least one member of a married couple will vote?
Using a 1% level of significance, can we say that there is a difference in the average waiting time between the two shops? Find the critical value(s).
Do the data in the sample represented in the Excel file support his contention at the .05 level of significance?
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