Selasa, 08 Oktober 2019

contoh soal Continuous probability distributions


Continuous probability distributions
ingin belajar bisnis online,
tapi belum tahu caranya?

kita kasih tahu caranya

cukup tonton vidionya GRATISS
dan praktekan ilmunya

silahkan klik link dibawah ini


atau klik tulisan tonton vidio




1.      Data are uniformly distributed between the values of 6 and 14.
Determine the value of f (x).
            a=6 b=14
            Tentukan nilai f (x).
              f (x) =
              f (x) =1/14-6
              f (x) =
              f (x) = 0.125

What are the mean and standard deviation of this distribution?
     Apa deviasi mean dan standar distribusi ini?
µ=  
µ=  
µ=
µ = 10

σ =  
σ = 
σ =
σ = 2.3094010768


What is the probability of randomly selecting a value greater than 11?
Apa probabilitas secara acak memilih nilai lebih besar dari 11?
P(x > 11) =
P(x > 11) =3/8
P(x > 11) =0.375

 What is the probability of randomly selecting a value between 7 and 12?
   Apa probabilitas secara acak memilih nilai antara 7 dan 12?
P(7 <x< 12) =
P(7 <x< 12) = 5/8
P(7 <x< 12) =0.625







2.   Assume a normal distribution and find the following probabilities.
a.   P(x <  20 ;  m  = 25  and  s  = 4)
z =  
z =  
z= -5/4
z = -1.25

Table A.5 nilai untuk z = -1.25  adalah: 0.3944
P(x <  20) = 0,5000-0.3944
P(x <  20) =0.1056

b.   P(x   77 ;  m  = 60 and   s  = 9)

z =
z =  
z= 17/9
z = 1.8889

Table A.5 nilai untuk z = 1,889  adalah: 0.4699
P(x   77 )= 0.5000- 0.4699
 P(x   77 )= 0.0301

c.   P(x  > 47 ;  m  = 50 and   s  = 8)
 z =
z =
Z = -3/8
 z = 0.375

 Table A.5 nilai untuk z =  0.375 adalah:  0.1443
                P(x  > 47) =      0,5 +      0,1443
                P(x  > 47 = 0,6443

d.   P(13  < x < 29 ; m  = 20 and   s  = 5)
 z =
z =
Z = -7/5
 z = -1.4
   
 Table A.5 nilai untuk z =  -1.4 adalah:  0.4192
   z =
z =
Z = 9/5
z = 1,8

Table A.5 nilai untuk z =  1,8 adalah: 0.4641
  P(13  < x < 29)=0.4641+  0.4192
  P(13  < x < 29)=0.8833


e.   P (x 100 ;  m  = 90 and  s = 3)
z =
z =
Z = 10/3
 z = 0.333
     Table A.5 nilai untuk z =  0.333 adalah:   0.1293
                P (x 100 ) = 0,5 -  0.1293
                P (x 100)  = 0.3707

1 komentar:

  1. Strange "water hack" burns 2 lbs overnight

    Over 160 000 women and men are hacking their diet with a simple and SECRET "liquids hack" to lose 2 lbs every night in their sleep.

    It's easy and it works every time.

    Here are the easy steps for this hack:

    1) Get a drinking glass and fill it up with water half full

    2) Proceed to follow this amazing HACK

    so you'll be 2 lbs lighter in the morning!

    BalasHapus