Answer:
a. 0.2639 or 26.39%
b. 0.6242 or 62.42%
Step-by-step explanation:
This problem can be treated as a binomial model with probability of success p = proportion of defectives in the batch.
Number of trials (n) = 10.
For any number of successes 'k', the probability is:

a. If p =0.10, what is P(x >1):

The probability is 0.2639 or 26.39%.
b. If p =0.20, what is P(x >1):

The probability is 0.6242 or 62.42%.