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QANT201 Test-aof ExcelskillsRelatedto NormalDistribution
Name:llW
llt)arl
v-
1. Thespeedof carspassing
througha checkpoint
followsa normaldistribution
with mu = 62.6
milesperhourandsigma= 3.7milesper hour.Whatisthe probability
that the nextcarpassing
will...
a. Beexceeding
65.5mileshour
= 1- l$({3,il = l- 0.7s3+t'l= 0.2t65$,
flCnlls.sl
Beexceeding
58.1milesperhour
J . f. l - o . t l t 4 5 l =g . t t g o 4.l
P C r > 5 t . 1 )l -=f t x < S 8
Bebetween61 and70 milesper hour.
z9g[+$6
fcQrTrTo)'PGnD-Ptx<4)=
o.q|lzs-0.3321y1
what isthe 90thpercentile
carspeedin the aboveexercise.( mu=62.8,
sigma=3.7)
(.1,62.6,3,7
)= 67,g+
ltaPil.nv