Jasmine Hia (sch470)
Assignment 10
18 Mar 2017
X ~ N(45, 152)
045
z
15
= P( -3 z 1)
= 0.4987 + 0.3413
= 0.84
1. (a) P( 0 X 60) = P(
6045
)
15
(b) From the standard normal distribution tables, the probability closest to 0.99
0.5 = 0.49 is 0.4901. Therefor
Jasmine Hia (sch470)
Assignment 2
3 Feb 2017
1. Frequency distribution:
Intervals
20 xi < 30
30 xi < 40
40 xi < 50
50 xi < 60
60 xi < 70
70 xi < 80
80 xi < 90
90 xi < 100
100 xi < 110
110 xi < 120
120 xi < 130
130 xi < 140
140 xi < 150
Relative frequency
Assignment 1
Jasmine Hia (sch470)
3rd Feb 2017
1. The graph is constructed by drawing a smooth curve through the
relative frequency histogram, cutting off some edges and making up
with some extra area to make sure that the total area under the graph
is 1.
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