A recent study showed that 25% of TikTok social media users are under the age of twenty. We took a random sample of 18 people who use TikTok. show calculations    What is the probability that exactly 5 of the TikTok users sampled are under twenty years old?       What is the probability that 1 or fewer of the TikTok users sampled are under twenty years old?       What is the probability that at least 2 of the TikTok users sampled are under twenty years old?       What is the mean and standard deviation for the number of TikTok under twenty years old for this sample?

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