4.3 A survey of 500 adults found that 40% of them prefer coffee over tea. If a random sample of 20 adults is taken, a) Suggest a suitable model to describe the number of adults X, who prefer coffee over tea. Justify your answer b) What is the probability at least 15 of them prefer coffee (rounded to four decimal places)?

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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4.3 A survey of 500 adults found that 40% of them prefer coffee over tea. If a random sample of 20 adults
is taken,
a) Suggest a suitable model to describe the number of adults X, who prefer coffee over tea. Justify
your answer
b) What is the probability at least 15 of them prefer coffee (rounded to four decimal places)?
Transcribed Image Text:4.3 A survey of 500 adults found that 40% of them prefer coffee over tea. If a random sample of 20 adults is taken, a) Suggest a suitable model to describe the number of adults X, who prefer coffee over tea. Justify your answer b) What is the probability at least 15 of them prefer coffee (rounded to four decimal places)?
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