midterm2060

# midterm2060 - York University Faculty of Science and...

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York University Faculty of Science and Engineering Midterm Examination SC BIOL 2060 3.0 Introduction to Biostatistics NAME (print): (Family) (Given) STUDENT NUMBER: Instructions : 1. You have 1 hour. 2. Answer all questions in the provided space. 3. You are allowed to bring in calcula- tor(s), one two-sided 8.5” × 11” aid sheets . (signature) Do not write here Question Marks Score 1 10 2 16 3 10 4 10 5 10 Total 56

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Problem 1 : (10pts, 2pt for each question) Please indicate if the statement is true or false. (1) Given the same population, to obtain wider conﬁdence interval for the population mean, we need to increase sample size. ( ) (2) Any outlier is either the maximum or minimum of the data set. ( ) (3) Assume that we have a good point estimate which has continuous distribution. The probability that the point estimate equals to the ture parameter value is 1/2. ( ) (4) If event A and B are independent with P ( B ) 6 = 0 , then P ( A | B ) = P ( B ) . ( ) (5) Given an arbitrary distribution with ﬁnite variance, the central limit theorem states that the sample mean will approximately follow a normal distribution. ( )
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## This note was uploaded on 05/18/2010 for the course BIOL 2060 taught by Professor Profgao during the Spring '10 term at York University.

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midterm2060 - York University Faculty of Science and...

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