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Full moon
It's a common belief that people behave strangely when there's a full moon and that as a result police and emergency rooms are busier than usual. Design a way you could find out whether there is any merit to this belief. Will you use an observational study or an experiment? Why?
If a random sample of 50 stocks from this index reveals an average gain of 11% and standard deviation of 6%, can you reject the magazine's claim in a two-tailed test? What is your p-value?
Construct the probability distribution for the value of a 2-card hand dealt from a standard deck of 52 cards (all face cards have a value of 10 and an ace has a value of 11).
With a confidence of 95%, what is the margin of error for the proportion of all carp that would incorporate the gene into their DNA?
Assume that the distribution of inter-renewal intervals for one state j is arithmetic with span d. Show that the distribution of inter-renewal intervals for all states is arithmetic with the same span.
In a study of 82 young (under the age of 32) drivers, 39 were men who were ticketed, 11 were men who were not ticketed, 8 were women who were ticketed, and 24 were women who were not ticketed (based on data from the Department of Transportation).
As of 2012, the proportion of students who use a MacBook as their primary computer is 0.36. You believe that at your university the proportion is actually greater than 0.36. If you conduct a hypothesis test, what will the null and alternative hypo..
the most popular color for cars is white 30 black 17 red 14 silver 12 gray 11 blue 11 and other 8. a survey of 180
a softball player brags that he is a 0.300 hitter yet at the end of the season he has gotten 21 hits in 84 at bats. is
About how many people would need to be in a random sample from a large population to produce an approximate margin of error of .30 or 30%?
State the decision rule using the .01 significance level. Compute the value of chi-square. What is your decision regarding H0?
what pattern would appear in a graph of a pearson correlation of r -0.80?a. points tightly clustered around a line
Final model for the clothing retailer problem. The residual plots below show the residuals for the final model in the clothing retailer problem plotted against Purchase12 and Recency. Do the plots suggest any potential problems with the conditions..
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