Thanks to social media, the happiest creature on earth, an always smiling Australian marsupial called a quokka, has become well known. Suppose that the weights of quokkas can be described by the Normal model N(8,1.2). Complete parts a through c.

a) What is the cutoff value for the highest 15% of the weights?

b) What is the cutoff value for the lowest 25% of the weights?

c) What is the cutoff value for the middle 30% of the weights?