Question 1178198
Ho: Current mean <= prior mean
Ho: Current mean > prior mean
alpha=0.05 p(reject Ho|Ho true}
Test statistic is t df=68,0.95 1-way with critical value t>1.668
calculation t=(x bar-mean)/sqrt ((s1^2/n1)+(s2^2/n2))
=540/sqrt (110775.09)
=1.622
fail to reject Ho and insufficient evidence to support claim that the average credit card debt has increased
p-value=0.055