Answer
a) reject the null hypothesis
b)there is sufficient evidence to support that the standard deviation of female heights is not 5 cm.
Work Step by Step
a) If the P-value is less than $\alpha$, which is the significance level, then this means the rejection of the null hypothesis. Hence:P=0.0055 is less than $\alpha=0.05$, hence we reject the null hypothesis.
b) Hence this means that there is sufficient evidence to support that the standard deviation of female heights is not 5 cm.
