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random sample solutions. A researcher drew a random sample of 57...

random sample solutions.

A researcher drew a random sample of 57 college students and asked whether they knew how to properly recycle e-waste. The researcher also asked them their academic major (whether they were a computer science major "yes" or "no"). The researcher obtained the results in the table below. Open the M15 Data File and follow the instructions on how to run a chi-square test in SPSS.

Do you know how to properly recycle e-waste?

Academic Major Yes No
Non-Computer Science 5 19
Computer Science 26 7
Use this information to answer questions #1 - #5

Question 1

What is the expected frequency for non-computer science majors who do not know how to properly recycle e-waste?

Question 2

What is the expected frequency for non-computer science majors who know how to properly recycle e-waste?

Question 3

What is the expected frequency for computer science majors who know how to properly recycle e-waste?

Question 4

What is the expected frequency for computer science majors who do not know how to properly recycle e-waste?

Question 5

What is the chi-square value?

Set of topics you studied Sets, Relations, and Functions. Your focus was the theory, and the topics in Discrete Structures relate to Computer Science. Using sources from the web find the relation between the Theory and the practice.

For example, sets are the foundation of a table (similar to an Excel spreadsheet) in a database, as a table is nothing but a set, and when we try to connect 2 tables, like employee and department, we are actually talking about relations, and then when we finally generate a report that shows which employee works in which department, we are actually working with functions.

Can you find 2 applied computer science examples for the theory?

Image transcription text

Q3. In the topology of the figure below: a) A host in electrical engineering can send a request to a host in computer science (choose YES or NO) b) A broadcast sent by a host in the electrical engineering will be received by Electrical Engineering (VLAN ports 1-8) Computer Science (VLAN ports 9-15)

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Image transcription text

Among a group of 125 students, 5 are taking Calculus, Psychology and Computer Science; 30 are taking Calculus and Computer Science; 25 are taking Psychology and Computer Science; 20 are taking Psychology and Calculus; 60 are taking Calculus; 75 are taking Psychology and 60 are taking Computer Science. How many are taking none of the subjects? Oo 0 5 O 10 O 15

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Image transcription text

15. Four hundred researchers at IBM were surveyed about their qualifications in computer science. It was found that 300 have at least one degree in computer science: 214 have a Bachelor's degree, 123 have a Master's degree, and 99 have a Ph.D. It was further found that 57 have both Bachelor's and Master's degrees, 74 have both Master's and a Ph.D., and 22 have both Bachelor's and Ph.D. de- grees. (i) How many of the researchers have all three degrees? (ii) How many came into computer science from another field; that is, they have either a Master's or a Ph.D. in computer science, but no Bachelor's degree?

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