Question

The probability of flipping a coin and noting Heads is 50%. If you flip the coin 100 times, what is the standard deviation of Heads to be noted? Insert your answer in decimal format correct to at least 3 significant figures.

Answer 1

Answer: 5.000

Explanation:

The formula to find the standard deviation for binomial distribution is given by :-

`\sigma=√(np(1-p))`, where p is the probability of getting success in each trial and n is the number of trials.

Given : The probability of flipping a coin and noting Heads is = 0.50

The total number of trials = 100

Then , the standard deviation of Heads to be noted will be :-

`\sigma=√(100(0.50)(0.50))=5.000`

Hence, the standard deviation of Heads to be noted = 5.000