Question 569955: The Thomas Supply Company, Inc. is a distributor of gas-powered generators. As with any business, the length of time customers take to pay their invoices is important. Listed below, arranged from smallest to largest, is the time, in days, for a sample of The Thomas Supply Company, Inc. invoices.
13 13 13 20 26 29 31 33 34 34 35 35 36 37 38 41 41 41 45 45 47 47 48
52 54 56 56 62 67 82
(a) Determine the second decile and the eighth decile.
D2 =
D8 =
(b) Determine the 67th percentile.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! 13 13 13 20 26 29 31 33 34 34 35 35 36 37 38 41 41 41 45 45 47 47 48
52 54 56 56 62 67 82
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Note: There are 30 elements
(a) Determine the second decile
Locator: 0.20*30 = 6
Round up to 7
20%ile = 31
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and the eighth decile.
Locator: 0.80*30 = 24
Round up to 25
80%ile = 54
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(b) Determine the 67th percentile.
Locator: 0.67^30 = 20.1
Round up to 22
67%ile = 48
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Cheers,
Stan H.
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