Introductory Applied Statistics for the Life Sciences
Introductory Applied Statistics for the Life Sciences STAT 371
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Mrs. Triston Collier
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This 1 page Class Notes was uploaded by Mrs. Triston Collier on Thursday September 17, 2015. The Class Notes belongs to STAT 371 at University of Wisconsin - Madison taught by Staff in Fall. Since its upload, it has received 9 views. For similar materials see /class/205079/stat-371-university-of-wisconsin-madison in Statistics at University of Wisconsin - Madison.
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Date Created: 09/17/15
Hui Wang 1335K MSC wanghstatiwisciedu STAT 371 Discussion 3 September 26 2006 1 Permutation and combination laws 0 For a set of size n and a sample of size r7there are nT different ordered samples with replacement and nn 7 1 71 7 r 1 different ordered samples without replacement 0 The number of orderings of n elements is n nn 7 1 21 o The number of unordered samples of r objects from 71 objects without replacement isc7 where7 2 Binomial Distribution 0 The Five Key Characteristics 7 1 Each trial has two possible outcomes It is also okay for there to be multiple outcomes that are grouped to two classes of outcomes 7 2 Trials are independent 7 3 The number of trials7 n7 is xed in advance 7 4 Each trial has the same success probability7 p 7 5 The random variable counts the number of successes in the 11 trials 0 The probability mass function nl P Y C3917 739 h 07 T J 71 71 p 7 W ere n J 7 j 7 JO 7 1W 7 2 20 7 O 7 n00 n On 7 C n Cn z o The mean of a Binomial distribution is u np o The variance of a Binomial distribution is 02 np1 7 p so that the standard deviation is 07 Examples 0 Example 1 328 on page 111 0 Example 2 329 on page 111 0 Example 3 333 on page 111 Of ce hours 230400pm Wed at 1335K MSC 1 htthWWWistatiwiscieduNwangh
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