iven +hat 40. 3/ of all possiole Dlless non 12, determine the areo nderthe densi

Question

iven +hat 40. 3/ of all possiole Dlless non 12, determine the areo nderthe density curve not iestne riant c2 2)/The- life times .-of-lignt ots·of a partidor type, Oxe ncr mally diStriafd Stonclcrd deviation of 12 nars. hot percentage oe the bulhs nor liretmes to either Side ck themrean ? 3 Scores o a chemisthy final excm ae ner mally ditn louted Lith a meon 280 na a Stendord dexiaticnf so. Determine tne percentage of somplcs of size H that ill hae mcan Scores ithin 3S points of tme popula tHon mtan score of

Explanation / Answer

As per the Chegg policy, we are advised to do one question at a time so i am attempting the 1st one.

1. Given,

Percentage of observations to the left of 12 = Area to the left of 12 = 40.5%

Total area = 100%

Hence,

Area to the right of 12 = 100% - 40.5% = 59.6%

[Area at 12 will be 0 because in continuous distributions, the probability of any specific point is 0.]

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