Textbook ExpertVerified Tutor
7 Nov 2021
Given information
Given that, We flip a coin 100 times (n = 100) and note that it only comes up heads 20% (p = 0.20) of the time. The mean and standard deviation for the number of times the coin lands on heads is µ = 20 and σ = 4 . We have to solve the following:
There is about a 68% chance that the number of heads will be somewhere between ___ and ___.
Step-by-step explanation
Step 1.
From the given information,
As is large, a Normal approximation is used.
So, mean will be
and standard deviation will be
Hence mean and the standard deviation is verified.
Unlock all Textbook Solutions
Already have an account? Log in