Close to 45% of smartphone users say they upgrade their phone every 2 years. In a...
Close to 45% of smartphone users say they upgrade their phone every 2 years. In a random sample of 60 smartphone users, what is the probability that a. more than 35 smartphone users upgrade their phone every 2 years?
Homework Answers
We have given n = 60 , x = 35 and p = 0.45
We have asked to find P ( More than 35 ) that is P ( x >35 )
P( x > 35 ) = P( x = 36 ) + P ( x = 37 ) + ....................... + P ( x = 58 ) + P ( x = 59 ) + P ( x = 60 )
By using Binomial distribution formula we get -
P( x > 35 ) = 0.0139 ( Rounded to 4 decimal places )
Hope this will help you. Thank you :)
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