Problems # 50-53,57b,58b,59b,68-72,74,75

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Answered 1 days AfterMar 22, 2021

Answer To: Problems # 50-53,57b,58b,59b,68-72,74,75

Parvesh answered on Mar 23 2021

151 Votes

For 50-53

50)
P(x>56)=1-P(x<56)

...................................
51)
........................................
52)
Here, we have to find x such that (x-54)/2.8284=c, where
P(z=>c=0.842 (using z table.)
=>(x-54)/2.8284=0.842
=>x=0.842*2.8284+54=56.4
Therefore, 80th percentile is 56.4
..............................................
53)
Here, we have to find x such that (x-54)/2.8284=c, where
P(z=>c=0.253 (using z table.)
=>(x-54)/2.8284=0.253
=>x=0.253*2.8284+54=54.7
Therefore, 60th percentile is 54.7
..................................................
57-b)
Here, mean=4.1
sd=1.3
We have to find P(0
..................................................
58-b)
Here, mean=4.1
sd=1.3
We have to find...

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Problems # 50-53,57b,58b,59b,68-72,74,75

Answer To: Problems # 50-53,57b,58b,59b,68-72,74,75

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