Please help.

Agenetic experiment with peas resulted in one sample of offspring that consisted of 407 green peas and 151 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? f ..... \\ a a. Construct a 95% confidence interval. Express the percentages in decimal form