Question 1179167
{{{H[0]: mu = 5.4}}}
{{{H[1]: mu > 5.4}}}

Significance level {{{alpha}}} = 0.01


Test statistic: {{{t = ((X-bar) - mu)/(s/sqrt(n)) = (5.6 - 5.4)/(1.1/sqrt(46))=1.23315  }}}  with 45 d.f.

==> p-value = 0.112 > 0.01 = {{{alpha}}}.


Therefore, do not reject the null hypothesis, and conclude that the mean life satisfaction for 2018 is not significantly higher than in 2016.