If E(X) = 100, E(Y) = 225, Var(X) = 10, Var(Y) = 25, and Cov(X, Y) =

Question:

If E(X) = 100, E(Y) = 225, Var(X) = 10, Var(Y) = 25, and Cov(X, Y) = 10, find
a) E(70X − 35Y).
b) Var(70X + 35Y).
c) Var(70X − 35Y).
d) If Cov(X, Y) = −5, find Var(70X − 35Y).

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Principles Of Managerial Statistics And Data Science

ISBN: 9781119486411

1st Edition

Authors: Roberto Rivera

See More Books

Question Posted: Aug 07, 2023 08:23 AM

See More Questions

Carol Harris, Ph.D, CPA, is a single taxpayer and she lives at 674 Yankee Street, Durham, NC 27409. Her Social Security number is 793-52-4335. Carol is an Associate Professor of Accounting at a local...
The following additional information is available for the Dr. Ivan and Irene Incisor family from Chapters 1-6. On December 12, Irene purchased the building where her store is located. She paid...
The following additional information is available for the Dr. Ivan and Irene Incisor family from Chapters 1-7. Ivan sold the following securities during the year and received a Form 1099-B that...
The Kroger Company reported the following data in its annual report (in millions). Instructions a. Compute Kroger?s inventory turnovers for fiscal years ending January 28, 2017, and January 30, 2016,...
Why is it difficult to predict the size of the accelerator?
Gato Inc. had the following inventory situations to consider at January 31, its year-end. (a) Goods held on consignment for Steele Corp. since December 12. (b) Goods shipped on consignment to Logan...
Each of the transformers shown here has its primary connected to a 120 V AC power supply and its secondary connected to a 1000 flload resistor. Rank the transformers, from highest to lowest, by the...
Plattsburg Plastics Corporation manufactures a variety of plastic products, including a series of molded chairs. The three models of molded chairs, which are all variations of the same design, are...
Brighton Bookstores has two divisions: books and electronics. The electronics division had another great year in 2024 with net sales of $9.1 million, cost of goods sold of $5.55 million, operating...
If X 1 ,X 2 , and X 3 each are independent and have an expected value of 10, find X+X+X 3 ( X + X + X ) ). 3 a) E b) Var
If E(X) = 40, E(Y) = 25, Var(X) = 3, Var(Y) = 2, and X is independent of Y, find a) E(5). b) E(2X). c) E(3X + 5Y). d) E(7X 3Y). e) Var(12). f) Var(7Y). g) Var(3X + 5Y). h) Var(3X 5Y).
A hydrometer is an instrument for measuring the specific gravity of a liquid. For example, vintners use a hydrometer to determine the density changes as wine is fermented, and producers of maple...
What are the common causes of design failure?
Why are communications, actions, and rewards so important in an organisation?
From your experience, identify five organisational norms. Assess how each affects innovation.
Explain the concept of design latitude and how it can affect manufacturing efficiencies.
What is the purpose of retainage?
How would you go about determining the value of the assets of a business if you were unfamiliar with them?
Transform the while loop from the previous exercise into an equivalent for loop (make sure it produces the same output).
What are the advantages and disadvantages of using social media for advertising, brand building, market research, and customer service?
What issues must be addressed when building an e-commerce presence ?
Analyze Walmart and Amazon.com using the competitive forces and value chain models.
Variable cost as a percentage of sales = 60% Unit Variable cost = $30 Fixed costs = $200,000 What is the break-even point in units? 195.A business had a margin of safety ratio of 20%, variable...
Ampco Disk Company operates a computer disk manufacturing plant. Direct materials are added at the end of the process. The following data were for August 20X5: Work in process, beginning...
A florist plan to invest in a number of bicycles to expand its delivery service. These will cost $17,100 upfront, but are expected to increase profits by $4,500 per year over the next 6 years. What...

If E(X) = 100, E(Y) = 225, Var(X) = 10, Var(Y) = 25, and Cov(X, Y) =

Question:

Step by Step Answer:

Given the information provided lets calculate the requested values a E70X 35YUsing the linear...View the full answer

Principles Of Managerial Statistics And Data Science

Students also viewed these Business questions