Please answer all parts correctly. Thank You!

According to Masterfoods |nc., peanut M&M's are 20% brown, 30% yellow, 25% blue and 25% orange. On a Saturday when you have run out of statistics homework, you decide to test this claim. You purchase a medium bag of peanut M&M's and find 30 browns, 25 yellows, 30 blue, and 15 orange. a) What is the Chi-square test statistic value for your Chi-square goodness-offit test? b) How many degrees of freedom are there for your Chi-square goodness-offit test? In a study where scientists wanted to compare two different techniques for measuring the amount of milk ingested by 16 infants, the mean and standard deviation of the measured differences were a = 135 and so = 200 respectively. A probability plot of the differences showed that the differences are distributed according to a normal distribution. At OL = 0.01 significance level, does it appear that the true average difference between the intake values measured by the two methods is greater than zero? (You can use the following value from a t-table as needed: P(t15 2 2.7) = 0.008.)