According to a survey by Statista from February 2016, about 35% of Snapchat users are 18 to
Question:
According to a survey by Statista from February 2016, about 35% of Snapchat users are 18 to 24 years old. Consider a random sample of nine Snapchat users.
a. What is the probability that exactly three users are 18 to 24 years old?
b. What is the probability that fewer than four users are 18 to 24 years old?
c. What is the probability that exactly six or seven users are 18 to 24 years old?
d. What are the mean and standard deviation for this distribution?
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Muhammad Salman Alvi
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