D, you talgate the ar in hont of yo re passed by 6 vehicles About 40% of all drv

Question

D, you talgate the ar in hont of yo re passed by 6 vehicles About 40% of all drvers wil talgate betre pessig. thinking they an make the ar n hom of them gofa tir. Suppose tat yoir d ing a condenbe dae dit one high w ' d (a) Let r be the number of vehidles that tailgate before passing. Make a histogram showing the probability distribution of r for 0 through t (b) Compute the expected number of vehicles out of 6 thet will taligate. (Round your answer bo two deimal places.) ) Compute the standard deviation of this dstribution, (Round your answer to two decimal places) vehidles

Explanation / Answer

a) for above data: bottom left graph is correct

b)

expected number =np=6*0.40=2.4

c)std deviation =sqrt(np(1-p))=1.20

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