answer all questions with explanation

The Lan-Na art museum has just opened in the UK city center for activities, such as exhibitions, performances, meetings, training, and seminars related to arts and culture in the northern region. Recently, the museum has established a Luning-film-related session. Every Saturday, the film session shows for three periods 9:00 AM - 1 1:00 AM, 1:00 PM - 3:00 PM, and 5:00 PM - 7:00 PM. The manager has collected the number of viewers that come to visit the film session. The average number of viewers for three periods is shown in the following table. Period The average number of viewers 9:00 AM - 11:00 AM 10 1:00 PM - 3:00 PM 30 5:00 PM - 7:00 PM 36 1.1) What is the probability that there are 10 to 15 viewers from 9:00 AM - 10:00 AM? 1.2) What is the probability that less than 4 viewers visiting the film session from 9:00 AM 10:00 AM? 1.3) What is the probability that more than 50 viewers visiting the film session from 5:00