According to a recent national Gallup Poll of U.S. smartphone user, 35% upgrade their cell phone...
According to a recent national Gallup Poll of U.S. smartphone user, 35% upgrade their cell phone every two years. If 13 smartphone users were randomly selected, how many users (rounded to the nearest whole number) would you expect to upgrade their cell phone every two years? include probability statement and how to solve
Homework Answers
Ans:
Use binomial distribution with n=13 ad p=0.35
Expected number U.S. smartphone user who upgrade their cell phone every two years
=np
=13*0.35
=4.55
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