Maurice Tutor

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  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 28 Jan 2018 My Price 8.00

major league baseball game

55.   If you go to a major league baseball game, how long do you expect the game to be? From the 2429 games played in 2001, here is a random sample of 25 times in minutes:

 

352  150  164   167   225  159  142  182   229   163

 

188

197

189

235

161  195  177  166   195  160

154

130

189

188

225

 

This is one of those rare instances in which we can do a con dence interval and compare with the true population mean. The mean of all 2429 lengths    is

 

178.29 (almost three hours).

 

a.   Compute the t-based con dence interval of Section 8.3.

 

b.   Use a normal plot to see if part (a) is valid.

 

c.    Generate a bootstrap sample of 1000 means.

 

d.   Use the standard deviation for part (c) to get a 95% con dence interval for the population mean.

 

e.    Investigate the distribution of the bootstrap means to see if part (d) is valid.

 

f.    Use part (c) to form the 95% con dence interval using the percentile method.

 

g.   Say which interval should be used and explain why. Does your interval include the true value, 178.29?

 

 

 


Answers

Maurice Tutor
(5)
Status NEW Posted 28 Jan 2018 10:01 PM My Price 8.00

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