## 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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## 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

## math7 said

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

## Alex said

can you send me wednesdays hwk of week 6