(Answered) How many apps they have on iPhones

Finance

Problem: Owners of the new iPhone have a mean of 17 user installed apps on their phones with a standard deviation of 6.35.

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Question: If you survey 100 people about how many apps they have on their iPhones, what proportion will have more than 15 apps? Please show steps how you get an answer and please be clear in your explanation.

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