
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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How did you (1) get the x-table number (please show step by step without taking short-cuts.
(2) how did you get - 0.5244 from 33-38/SD when I only got -5? What am I missing?

Transcribed Image Text:1:16
←
I used z-table to calculate the probability and
quantile for standard normal distribution.
Step2
b)
Let x denote the repair time.
Given that.
a)
Given that 40% of the units
repaired b/w 33 and 43 min.
⇒ P (33 < X < 43) = 0.40
are
Using standardization.
P(33-M LX-MC
→
33-38
Step3
XN Normal (M= 38 min.)
Using 2-table,
33-38
-
43-M
5
<2<43-38).
= 0.40,
where I is the mean
and is the sd.
= 0.40
where 2 is that
Standard normal variate.
ZN Normal (0, 1)
?
LTE
43-38
5 =
50.5244
6 = sd = 9.535 min.
2
= -0.5244 and
=0.5244
-5/6=-0.5244 and $=0.5244
√x
Do
8
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