Use a= .01 and one tailed test  t= -2.50, df =25. reject, fail to reject  t= 4.00, df =35. reject, fail to reject  t= -1.55, df= infinty symbol. reject, fail to reject

PREALGEBRA
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ISBN:9781938168994
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Chapter5: Decimals
Section5.5: Averages And Probability
Problem 399E: Joaquin gets paid every Friday. FI is paychecks for the past 8 Fridays were $315, $236.25, $236.25,...
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Use a= .01 and one tailed test 

t= -2.50, df =25. reject, fail to reject 

t= 4.00, df =35. reject, fail to reject 

t= -1.55, df= infinty symbol. reject, fail to reject 

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