Please help, I don't understand how I got C wrong. PLEASE INCLUDE THE STEPS THANKS!

Hyundai Motor America sold 720,783 vehicles In the U.S. in 2013, with the U.S.-built Elantra leading sales with 247,912 cars sold, up 23% from 2012. The other top selling nameplates in 2013 were the Sonata with 203,648 sold, the Santa Fe with 88,844 sold, and the Acoent with 60,458 sold. The company wants to undertake a survey of 2013 Hyundai buyers to ask them about satisfaction with their purchase. (a) What proportion of the Hyundais sold in 2013 were Elantras? (Round your answer to four decimal places.) _~I (b) If they plan to survey a simple random ample of 1800 Hyundai buyers, what is the expected number}: and standard deviation 0 of the number oF Elantra buyers in the ample? (Round your answers to two decimal places.) :1 = 619.02 J Elantra buyers 0* = 20.15 f Elantra buyers (c) What is the probability they will get fewer than 602 Elantra buyers in their sample? (Round your answer to four decimal plaoes.) .2033 x You may need to use the appropriate Appendix Table to answer this