Express the binomial probability to be approximated by the form
P( x = u ) = P( x u ) P ( x u 1)
P( x < u ) = P( x u 1)
P( x > u ) = 1 P( x u )
P( x u ) = 1 P ( x u 1)
P(a x b) = P ( x b) P ( x a 1)
P (a < x b) = P ( x b) P ( x a )
P(a x < b) = P ( x b 1)
6.8
a. z>1.96 => SKETCH AND INDICATE
b. z>1.645 => SKETCH AND INDICATE
c. z>2.575 => SKETCH AND INDICATE
d. z<-1.28 => SKETCH AND INDICATE
e. z<-1.645 or z >1.645 => SKETCH AND INDICATE
f. z<-2.575 or z >2.575 => SKETCH AND INDICATE
g.
z>1.96
z>1.645
z>2.
1. Calculate the mean, median , and mode for the following samples:
2,3,5,3,2,3,4,3,5,1,2,3,4
Answers:
Mean
n
X=
x
i =1
i
=
n
x1 + x2 + x3 + x4 + x5 + x6 + x7 + x8 + x9 + x10 + x11 + x12 40
=
= 3.0769
13
13
Median
Raw data: 2,3,5,3,2,3,4,3,5,1,2,3,4
Order
Quiz # 4 Ans.
1.
For a given , please write down the definition of the z-value, z / 2 .
Sol:
2. Please explain how to use the interquartile range to determine whether the data are from
an approximately normal distribution or not?
Sol:
the data are from an