Answer one question from below (allparts). Post should include a detailed solution and explanation.

Main Post:  Answer one question from below (allparts).  Post should include a detailed solution and explanation. 

Replies (at least 2): At least one of your replies shouldaddress the correctness of a classmates solution to a problem (one that youdid not do for your main post).  You should attempt the problem beforereplying and discuss any differences in the work. 

Your other repliesshould attempt to discuss the problem.  Here are some suggestions:

a)   Discuss what you learned from the problem. 
b)    Discuss something the problem made you think about.
c)    If we were to change the problem slightly, address how theanswer would change.

2.   a) State the mean and standard deviation of the standard normal curve. 
      b) For the standard normal curve, find the z-score that corresponds to the 20th percentile. 
      c) Does this mean that 20% of z-scores are below or above the z-score that you found in part b? 

5. An airline reportsthat it has been experiencing a 10% rate of no-shows on advancedreservations.  Among 100 advanced reservations, find the probability thatthere will be fewer than 5 no-shows.

a) Determine theprobability with last weeks Binomial distribution.

b) Determine theprobability with this weeks Normal approximation to the Binomial distribution.

c) Compare answersfrom part a and b.