A news company reported that 8% of adult Americans have a food allergy. Consider selecting 10 adult Americans at random. Define the random variable x as x = number of people in the sample of 10 that have a food allergy. Find the following probabilities. (Round your answers to three decimal places.) 
a) P(x < 3) 
b) P(x ≤ 3) 
c) P(x ≥ 4) 
d) P(1 ≤ x ≤ 3)