57%. 4:21 PM 0 CHAPTER 6 IProbabity wbether the boudy in os the righ or le and f

Question

57%. 4:21 PM 0 CHAPTER 6 IProbabity wbether the boudy in os the righ or le and find the proportion in te dy säde of the line 7, Fid each ofthe 1owing prubah!ties for aoormal Ie 204, te New Yok Yankees had a wam hning Find each of the olowing probabhilies for a normal &It you randomly sclectone pame from 204 what 89% n body on the nght 7. The didribution of scocs on the SAT appro devialion of . 100. For the populaion of staleib . What is the A normal distribution h KAcconingtoa ecnt report people smile an awrag of-me or da. Assuming that the be 13, Anormal datributaon has a mean of . 30and a

Explanation / Answer

from normal value table

a) P(-0.25<Z<0.25 )=0.5987-0.4013 =0.1974 (as at z=-0.25 and z=0.25 probabilities are 0.5987 and 0.4013 respectively)

b )

P(-0.67<Z<0.67)=0.7486-0.2514 =0.4972

c)

P(-1.20<Z<1.20)=0.8849-0.1151 =0.7698

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