I need help with this question.

A poll found that 7% of teenagers (ages 13 to 17) suffer from arachnophobia and are extremely afraid of spiders. At a summer camp there are 11 teenagers sleeping in each tent. Assume that these 11 teenagers are independent of each other. (Round your answers to four decimal places.) (a) Calculate the probability that at least one of them suffers from arachnophobia. (b) Calculate the probability that exactly 2 of them suffer from arachnophobia? (c) Calculate the probability that at most 1 of them suffers from arachnophobia? (d) If the camp counselor wants to make sure no more than 1 teenager in each tent is afraid of spiders, does it seem reasonable for him to randomly assign teenagers to tents? (Round your answer to two decimal places.) If the group of 11 teenagers in the tent is a random sample, then there is a % chance that 2 or more teenagers will be afraid of spiders in any particular tent. This probability is somewhat large , so the camp counselor should not randomly assign teenagers to their tents. Google Chrome Version 77.0.3865.90 Microsoft Windows 10 Home 32-bit Build 6.2.9200