Question

1. For a standard normal distribution, find

P(z<-1.85)

p(z>-1.69)

Answer 1

For a standard normal distribution we want to find,

  and  

Given that, Z~N(0,1)

Solve:-

i)

   [ We know that if Z~N(0,1) then , ]   

[ Since, ]

[ From standard normal probability table we get, ]

ii)

  

[ We know that if Z~N(0,1) then , ]

   [ Since, ]

[ From standard normal probability table we get, ]

Answer:-