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Question: Refer to the article entitled 21st Birthday from the Penn State Pulse (January, 2001). Located in the Library Reserves--use the Library Reserves link in Angel. Find the value for the percent of Penn State students that said they consumed more alcohol than usual on their 21st birthday. Convert this percent to a proportion. A random sample of three Penn State students who recently turned 21 was obtained from the Penn State population. Set up the calculation for the probability that the first and the third Penn State student consumed more alcohol than usual on their 21st birthday while Penn State Student 2 did not consume more alcohol than usual on their 21st birthday. Remember, the order of the values is important.
Use a decision tree to describe the possible strategies and the consequences (or payoffs) of each. Show your decision tree.
A valid probability model
How much money would a Western household have to spend on groceries per year in order to be at the 99th percentile?
The company can alter the standard deviation. Use a sketch to decide how the company can proceed if they want to reduce this proportion by changing the standard deviation.
What if the number of debilitating network viruses detected in a day at the firewalls of an Internet service provider within a certain geographic region is fueling a possible management decision to upgrade the detection system.
Q. An owner of a chain of stores would like to predict weekly sales based on the number of customers who made a purchase. A random sample of 10 stores were selected. The weekly sales are in thousands of dollars.
Assume we have set of blood pressure with a mean of 80 Diastolic, and a sample standard deviation of 10 points. If we assume a normal distribution of Diastolic blood pressures,
Select a second sampling technique for the same hypothesis and give a second detailed design of how you would gather sampling data.
Suppose that you are interested in determining the relation between the students average SAT scores [x] and their freshman GPA [y].
Assume the probability that a person has the desease is 0.08 for all people, independently of each other. Compute the total expected number of tests necessary.
1. questions based on a distribution of scores with and the standard deviation 6.38. draw a small picture to help
Use the relative frequency approach to construct a probability distribution and show that it satisfies the required condition. Find the expected value of the number of tests taken.
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