Math 7

basic statistics

Week 6

Posted by math7 on February 13, 2006

Due Monday 2/13/06
Problems 1,2 on page 45.
Problems 4,5 on page 36
– Tuesday Exam 2
Due Wednesday 2/15/06
Problems 1,3 on pages 51-52.
Due Friday 2/17/06
Problems 5,6 on page 52.
Read additional instructions on class website

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3 Responses to “Week 6”

  1. math7 said

    Unconfirmed Answers for #1 & 2 on page 45.  Also #4 & 5 on page 36.
    #1)
    P(A)= 8000/14000= .57
    number of games= 53
    Bin(53,.57)
    E(X)= .57*53= 30.21
    P(X<=26])= .1517 Answer: this is NOT an unbelievably small probability. Therefore the management does not have any reason to suspect process B. #2) P(A)= 200,000/400,000= 1/2 number of games= 155 Bin(155,.5) E(X)= 77.5 P[(X<=35)]= 2.12209e-12 Answer: this is an unbelievably small probability. Therefore the salk vaccine does prevent polio myelitis. #4) P[(X<=790)] using Laplace-DeMoivre Theorem= -9.5/20 #5) P([Z<=94])= .739 P([Z<=86])= .310 subtract the two and the final answer is .429

  2. math7 said

    Email me if you want Wednesday’s homework. I will send you an excel file.

  3. Alex said

    can you send me wednesdays hwk of week 6

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