Thanks to social media, the happiest creature on earth, an always smiling Australian marsupial called a quokka, has become well known. Suppose that weights of quokkas can be described by a Normal model with a mean of 6 pounds and a standard deviation of 1.7 pounds, a) How many standard deviations from the mean would a quokka weighing 8 pounds be? b) Which would be more unusual, a quokka weighing 8 pounds or one weighing 10 pounds? a) A quokka weighing 8 pounds is standard deviation(s) below the mean (Round to two decimal places as needed.) b) A quokka weighing 10 pounds is standard deviation(s) the mean weight. the mean. The quokka weighing pounds is more unusual because its weight is a number of standard deviations from (Round to two decimal places as needed.)