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Question 5 The average amount of money that people spend at Don Mcalds fast food place is $7.3500 with a standard deviation of $1.9000. 18 customers are randomly selected. Please answer the following questions, and round all answers to 4 decimal places where possible and assume a normal distribution. a. What is the distribution of X? X ~ N( b. What is the distribution of X? I ~ N( c. What is the distribution of x? x - N d. What is the probability that one randomly selected customer will spend more than $7.8783? e. For the 18 customers, find the probability that their average spent is more than $7.8783. f. Find the probability that the randomly selected 18 customers will spend less than $141.8094. g. For part e) and f), is the assumption of normal necessary? O Yes No h. The owner of Don Mcalds gives a coupon for a free sundae to the 5% of all groups of 18 people who spend the most money. At least how much must a group of 18 spend in total to get the free sundae? $