Let x be a ramdom variable that represents the height in inches, of an adult 18 years or older female in the US then x has an approximately normal distribution with a mean=63.5 and standard deviation...

Let x be a ramdom variable that represents the height in inches, of an adult 18 years or older female in the US then x has an approximately normal distribution with a mean=63.5 and standard deviation = 3 find the probability that a ramdomly chosen adult female in the US is at most 66 inches tall. Hint: you must find P(x is at least 66 in)