<PRE><B>Question 920777</B>
if 62% are male then 38% are female since 62 + 38 = 100%


probability of all females is equal to .38^7


probability all males is equal to .62^7


probability at least 1 female = 1 - probability all male = 1 - .62^7


^ is the symbol used for exponentiation.


.38^7 means .38 raised to the 7th power.


.38^7 = .0011 rounded to 4 decimal places.
.62^7 = .0352 rounded to 4 decimal places.


1 - .62^7 = 1 - .0352 = .9648 rounded to 4 decimal places.


.38^7 means .38 * .38 * .38 * .38 * .38 * .38 * .38


7 instances of .38 are multiplied by each other.


the number of multiplications performed is 7 - 1 = 6.








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