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A police officer is evaluating the performance of two squads of officers. The data for the groups are as follows:
Group A: Arrests in July, Mean=15, Standard Deviation = 1
Group B: Arrests in July, Mean=15, Standard Deviation = 3.5
If each group had 15 officers, how would you characterize the performance of the typical officer in each squad?
You randomly call friends who could be potential partners for a dance. You think that they all respond to your requests independently of each other, and you estimate that each one s 7% likely to accept your request. Let X denote the number of call..
Assuming the life length of batteries is normally distributed, what is the p-value associated with this test? Place your answer, rounded to 3 decimal places in the blank. For example, 0.0234 would be a legitimate entry.
In the summer ECMBA has a group assignment. Students are assigned to two person groups that have to make a 25 point paper applying game theory to competitive strategy.
A famous hypnotist performs to a crowd of 350 students and 180 non-students. The hypnotist knows from previous experience that one half of the students and two third on the non-students are hypnotizable.
After collecting appropriate data, you find that 1148 customers chose to "Be A Glutton". Compute P-value and determine the conclusion of the test.
The time it takes a symphony orchestra to play beethovens ninth symphony has a normal distribution with a mean of 64.3 minutes and a standard deviation of 1.15 minutes. If an orchestra plays it so slowly that 80% of the orchestras play faster than..
A 5-card poker hand is said to be a full house if it consists of 3 cards of the same denomination and two other cards of the same denomination(of course,different from the first denomination). How many hands of full house are possible?
Choose a variable from your own organization. describe how calculating a confidence interval from the results of a sample might be useful for learning more about the population statistics for that variable. Indicate whether you would be calculatin..
Find a real-world example where the uncertain quantity you are interested in can be modeled as a random variable with exponential distribution. Explain why the memoryless property indeed holds.
a) How many cars are red and have a sun roof, but do not have an automatic transmission? b) How many cars are not red, do not have an automatic transmission, and do not have a sun roof?
A null hypothesis is that the average pulse rate of adults is 70. For a sample of 64 adults, the average pulse rate is 71.8. A significance test is done and the p-value is 0.02. What is the most appropriate conclusion based on α of 0.05?
The following hypothetical data demonstrate the relationship. The dependent variable is a measure of language skill at age 3 for each child. Do the data indicate any significant differences? Test with α=0.05.
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