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# quiz_7.pdf

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Department
Statistics
Course
STAB52H3
Professor
Ted Petit
Semester
Summer

Description
UTSC Department of Computer and Mathematical Sciences STA B52 Quiz 7 Version 1 Family Given Student No. Understanding. Here’s an example of what to expect on a term test or ▯nal: The Aggregate Bond Index is an index designed to measure the performance and/or value of bonds. The S&P 500 index is an index designed to measure the performance and/or value of U.S. equities. From Chart 3 note that fully 93 percent of the daily correlation \ticks" were negative. Explain what this describes about the relationship between the value of aggregate bonds and the value of the S&P 500. Proof.Here’s your quiz question: Show that Cov(X;Y + Z) = Cov(X;Y ) + Cov(X;Z). Problem Solving Theoretical. Here’s an example of what to expect on a term test or ▯nal: Suppose 2hat X is a random variable with possible values 0;1 and 2. Find a formula for P(X = k) in terms of EX and E(X ) for k = 0;1;2. Problem Solving Applied. Here’s an example of what to expect on a term test or ▯nal: Suppose a system has 10 components and that at a particular time the jth component is working with probability 1=j for j = 1;2;:::;10. How many components do you expect to be working at that particular time? 1 UTSC Department of Computer and Mathematical Sciences STA B52 Quiz 7 Version 2 Family Given Student No. Understanding. Here’s an example of what to expect on a term test or ▯nal: The Aggregate Bond Index is an index designed to measure the performance and/or value of bonds. The S&P 500 index is an index designed to measure the performance and/or value of U.S. equities. From Chart 3 note that fully 93 percent of the daily correlation \ticks" were negative. Explain what this describes about the relationship between the value of aggregate bonds and the value of the S&P 500. Proof.Here’s your quiz question: Show that Cov(aX;bY ) = abCov(X;Y ). Problem Solving Theoretical. Here’s an example of what to expect on a term test or ▯nal: Suppose 2hat X is a random variable with possible values 0;1 and 2. Find a formula for P(X = k) in terms of EX and E(X ) for k = 0;1;2. Problem Solving Applied. Here’s an example of what to expect on a term test or ▯nal: Suppose a system has 10 components and that at a particular time the jth component is working with probability 1=j for j = 1;2;:::;10. How many components do you expect to be working at that particular time? 2 UTSC Department of Computer and Mathematical
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