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# AN ANALYST AT A LOCAL BANK WONDERS IF THE AGE DISTRIBUTION

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Author: Christine Farr
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http://theperfecthomework.com/an-analyst-at-a-local-bank-wonders-if-the-age-distribution-of-customers-coming-for-service-at-his-branch-in-town-is-the-same-as-at-the-branch-located-near-the-mall/

an analyst at a local bank wonders if the age distribution of customers coming for service at his branch in town is the same as at the branch located near the mall.  He selects 100 transactions at random from each bank and researches the age information for the associated customers.  Use the accompanying table below to complete parts a theough g
less than 30                                    30-55                                        56 or older                      total
in town  branch                  20                                                    42                                            38                                     100
mall branch                         30                                                    48                                             22                                     100
Total                                       50                                                    90                                             60                                       200

a.  what are the null and alternative hypothesis
b  what type of test is this
chi square goodness of fit
chi square test of homogeneity
chi-square test of indendence
c. what are the expected values
less that 30 _________ in town                            30--55________in town                               56 or older_______in town
mall branch                                             mall branch                                           _________mall branch
d.  find X2 statistic_____________
e.  How many degress of freedom does the x2 statistic have_________
f.  find the critical value at a=0.05
X2=____________

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