The leaves of the temph{Mimosa pudica} are typically horizontal. However, if one of them is touched lightly, the leaflets will fold. An experiment is run to measure the amount of time between touch and complete closure of the leaves. The data collected {measured in seconds} are as follows: 3.3 2.8 2.? 3.0 2.6 2.3 2.5 2.3 2.1 2.8 3.1 2.3 It needed, you may assume that the time from touch to closure is normally distributed. {a} [2 marks] Use this data to determine a 98% confidence intenral for yr. the true mean time from touch to closure. [b] [1 mark] Using your answer to part {a}, is it reasonable to say that the true mean time from touch to closure is 2.8 seconds? Explain why or why not