thanks. The lengths of time (in years) it took a random sample of 32 former smokers to quit smoking permanently are listed.

Hi, I completed question a), just need help with b) through e).. thanks.
The lengths of time​ (in years) it took a random sample of 32 former smokers to quit smoking permanently are listed. Assume the population standard deviation is 5.9 years. At α = 0.07​, is there enough evidence to reject the claim that the mean time it takes smokers to quit smoking permanently is 13 ​years? Complete parts​ (a) through​ (e).
 
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