To fill in the blanks:
Part 1: a. The probability that Sandra will choose a white marble from the bag is \(5\) out of \(9\), or \(\frac{5}{9}\).
Part 2: b. It is likely that Sandra will choose a white marble from the bag.
In summary:
- Part 1: \(5\) out of \(9\), or \(\frac{5}{9}\)
- Part 2: likely