urgent!! Thank you

(a) The amount of money spent by a sample of nine customers for lunch ($) at a fast-food restaurant is recorded as follows: 4.20 5.03 5.86 6.45 7.38 7.54 8.46 8.47 9.87 (i) Carry out the hypothesis to determine whether the mean amount spent for lunch is different from $6.50. Determine the p-value and conclude your answer. (6 marks) (ii) What assumption must be made about the population distribution in order to conduct the t test in part (a)(i). with this sample size, do you have any concern about the shape of the population distribution when conducting the t test. Justify your answer. (2 marks)