Miss Penny can play 2 songs 87% of the time. She is expected to give 57 performances. Let r be a random variable that represents the number of successful performances of the two songs.
a. P(r %26lt;= 47)
b. P(45 %26lt;= r %26lt;= 55)
c. P(r %26gt;= 50)
d. P(r=45)
Could some please help me with these and show how the answer came about. Geez!
Normal Distribution probability Please Help?
sry i dont know
Reply:i did my algebra homework long ago...and quite frankly...i don't wanna go back to those times
but i think that it is A
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