A coin is tossed 72 times. Find the standard deviation for the number of heads that will be tossed

The probability of obtaining a head or tail in tossing a coin is modeled by the binomial distribution.

The probability of obtaining heads (success) is p = 1/2.

In n tosses, the expected statistical parameters are

m = np, the mean

σ = √[np (1-p) ]

In 72 tosses of the coin, the standard deviation for the number of heads obtained is

σ = √[72 * (0.5) * (0.5) ]

= 4.243

Answer: 4.243