Please help I have been struggling with these two.

An experiment with k = 3 categories and n = 100 produced the data shown in the following table. We are interested in the null hypothesis that p1 = 0.20, p2= 0.30 and p3= 0.50 against the alternate hypothesis that the proportions are different than specied in the null hypothesis. We get the following data for testing this hypothesis: Would you reject the null at alpha = 0.01 and 0.05? (3. yes at 0.01r yes at 0.05 (3. yes at 0.01r no at 0.05 C. no at 0.01, no at 0.05 C. no at 0.01, yes at 0.05 The data below shows the age - group and the favorite type of music of 400 randomly selected people . Test the claim that age- group and favorite music type are independent of each other Use alpha = 0. 1 Age Group Country Rock 15 - 21 90 110 21 - 30 110 90 What is the test statistic value ? 04 O