According to mashable.com, 37% of Snapchat users use the app for Creativity. A random sample of 30
Question:
According to mashable.com, 37% of Snapchat users use the app for Creativity. A random sample of 30 of users was selected. Assuming this estimate is true, use the normal approximation to the binomial distribution to answer the following:
a. Calculate the mean and standard deviation for this distribution.
b. What is the probability that 13 or more of the 30 users use the app for Creativity?
c. What is the probability that exactly 14 of the 30 users use the app for Creativity?
d. What is the probability that 7, 8, or 9 of the 30 users use the app for Creativity?
e. What is the probability that 14, 15, or 16 of the 30 users use the app for Creativity?
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