MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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For a cooking oil company, the price they are paid for coconuts in large shipments is based on the amount of coconut extract from the load. Therefore, there is a need to determine the amount of coconut extract in the whole load prior to extraction.  A sample of n coconut can be taken and find y1, . . . , yn , the amount of coconut extract in these coconuts.

  
Nȳ is hard to get in this case because N is hard to count.  How can the total amount of coconut extract from a load shipment be measured?  Using the total weight would be a good idea and easy to obtain.  The relationship between the weight of the load and the weight of the coconut extract one obtains can be used.  As it turns out, 15 coconuts selected by simple random sampling were weighed and also extracted.  The total weight of the coconut shipment was found to be 900 kg. Given these results (below):

Use a ratio estimator to estimate the total weight of the coconut extract for this shipment of coconuts. Also, compute the variance of your ratio estimate to see how accurate is the result of using a ratio estimate.

Weight of the coconut
extract in grams
73
68
Weight of the
COCOnut in grams
Sampled coconut
100
2
118
3
91
141
4
114
168
5
73
127
6
123
173
127
182
8
73
96
50
82
10
73
132
11
77
118
12
109
146
13
96
150
14
50
73
15
100
159
Transcribed Image Text:Weight of the coconut extract in grams 73 68 Weight of the COCOnut in grams Sampled coconut 100 2 118 3 91 141 4 114 168 5 73 127 6 123 173 127 182 8 73 96 50 82 10 73 132 11 77 118 12 109 146 13 96 150 14 50 73 15 100 159
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