A particular type of tennis racket comes in a midsize version and an oversize version. Sixty percent of all customers at a certain store want the oversize version. (Round your answers to three decimal places.) (a) Among nine randomly selected customers who want this type of racket, what is the probability that at least six want the oversize version?
.483

Correct: Your answer is correct.

(b) Among ten randomly selected customers, what is the probability that the number who want the oversize version is within 1 standard deviation of the mean value?
.663

Incorrect: Your answer is incorrect.

(c) The store currently has eight rackets of each version. What is the probability that all of the next ten customers who want this racket can get the version they want from current stock?