pea_ex1_2003_sol - Probability for Engineering Applications...

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Probability for Engineering Applications Mid Term Exam #1, October 20 th , 2003 Last name of student Student ID number First name of student Email address Do This First: 1. Make sure that you have all the pages of the exam book. 2. Fill in the above information. Exam Rules: 1. This is a 50 minutes exam. 2. The syllabus includes all material covered until Section 3.6 (inclusive). 3. This is NOT an Open Book and Notes Exam. You are allowed one A4 sized crib sheet with only one side used. 4. You are not allowed to consult any other student. 5. You may use a calculator, but not a laptop, palmtop or such other computer. 6. The last page is blank for your use. Q1 Q2 Q3 Q4 Total 20 30 20 30 100
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1. For the dataset given below, -32 23 12 28 05 -11 -19 08 -03 17 find a. sample mean (5pts) 8 . 2 1 1 = = = N n n x N m b. sample median (5 pts) There are 10 numbers in the dataset. If the dataset is sorted, then the fifth number is 05 and the sixth number is 08. Therefore, the median is 5 . 6 ) 08 05 ( 2 1 = + c. sample standard deviation (5pts) ( 29 066 . 19 1 1 1 2 = - - = = N n n x N
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pea_ex1_2003_sol - Probability for Engineering Applications...

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