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Suppose that one in six smartphone users have fallen prey to cyber-attack. Discuss the sampling distribution of the sample proportion based on a sample of

Suppose that one in six smartphone users have fallen prey to cyber-attack.

Discuss the sampling distribution of the sample proportion based on a sample of 200 smartphone users. Is it appropriate to use the normal distribution approximation for the sample proportion?

What is the probability that more than 20% of smartphone users in the sample have fallen prey to cyber-attack?

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