#### Answer

a) fail to reject the null hypothesis
b)there is not sufficient evidence to support that the percentage of blue M&Ms is less than 5%.

#### 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=0.0721 is more than $\alpha=0.05$, hence we fail to reject the null hypothesis.
b) Hence this means that there is not sufficient evidence to support that the percentage of blue M&Ms is less than 5%.