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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 ____chance that the number of heads will be somewhere between 12 and 28.
Step-by-step explanation
Step 1.
The empirical rule predicts that 68% of observations fall within the first standard deviation , 95% within the first two standard deviations
, and 99.7% within the first three standard deviations .
95% within the first two standard deviations ,
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