Answer
We fail to reject the Null hypothesis.
Work Step by Step
$H_{o}: p = 0.5$
$H_{a}: p > 0.5$
α = 0.05
Using technology, we have the P value = 0.1408 > 0.05
Hence we fail to reject the Null hypothesis as there is no sufficient evidence that would allow us to conclude that a proportion of less than 0.5 adults believe that they will not have enough money to retire comfortably.
