III Home | (90 X 52:? Files X n Course X I u Course X I u Course X I u Course X I u Course X I u Course X I u Course X I u Course X I u Course X I u Homew X I + v mano- cf.instructure.com/courses/'I 678430/files?preview=1 34736162 11. (a) Assume that SAT scores are normally distributed with a mean ,u = 1383 and a standard deviation 0' = 240 If 144 SAT scores are randomly selected nd the probability that they have a mean greater than 1420 (b) The mean speed of trucks along an interstate highway is 64 miles per hour with a standard deviation of 10 miles per hour. Find the z-scores of the following recorded speed and from your result 5 determine if the speeds are usual or unusual (i) 84 miles per hour (ii) 36 miles per hour (iii) 85 miles per hour (iv) 88 miles per hour Zoom Google Drive All My Files