stats assignment

it is a stats problem and I have an example of how the answer should appear exactly so you'll have to do the problem using the data set then put it in writing in a word document with the pie graph just like the example. it has to be done before 2am.

Question: "Research has claimed that the average life span of a male mosquito is 15 days. To test this claim, the life span of 30 male mosquitos was observed and recorded on the attached spread sheet. Assume that the life spans are normally distributed and set A=0.5 is there any evidence that the accepted average life span of male mosquitos should be changed?"

Spread Sheet: attached.