Q2)a) 3 & 4 /PLease answer only questions 3 and 4. Thank you! In a hotel, a guest at a wedding pays 100 euros per person for an overnight stay and 10 euros for breakfast. If a guest uses the minibar,...

Q2)a) 3 & 4 /PLease answer only questions 3 and 4. Thank you!

In a hotel, a guest at a wedding pays 100 euros per person for an overnight stay and 10 euros for breakfast. If a guest uses the minibar, the cost is 12 euros.
Experience has shown that wedding guests book as follows:
• 80% book an overnight stay with breakfast
• In addition to the booked overnight stay with breakfast, 15% also use the minibar
• 5% book an overnight stay without breakfast and do not use the minibar either
a) A total of 80 guests have announced their wedding at the hotel.
1. What is the overall turnover of these guests?

2. Calculate a measure for the theoretical fluctuation of a guest's turnover. What is your calculated measure?

3.
What is the approximate probability that the total turnover of these guests is over 8,860 euros?



4.
What is the maximum total turnover of these guests with a probability of 93%?