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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

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. Use this information to answer the following probability questions.

a. What is the probability that exactly 5 of the TikTok users sampled are under twenty years old?

b. What is the probability that 1 or fewerof the TikTok users sampled are under twenty years old?

c. What is the probability that at least 2of the TikTok users sampled are under twenty years old?

d. What is the mean and standard deviation for the number of TikTok under twenty years old for this sample?

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