A genetic experiment with peas resulted in one sample of off

A genetic experiment with peas resulted in one sample of offspring that consisted of 406 green peas and 162 yellow peas. a. Construct a 95 % confidence interval to estimate of the percentage of yellow peas. b. It was expected that 25% of the offspring peas would be yellow. Given that the percentage of offspring yellow peas is not 25%, do the results contradict expectations?