Question

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.

Answer 1

Answer:

(a) 31 , 54

(b) 48

Explanation:

• Data set : 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
• Part a requires you to find second decile and 8th decile
• For second decile there are 30 elements for second decile:

(a) Locator: 0.2*30 = 6

    Round up to 7

    20% decile = 31

• For 8th decile

    Locator: 0.8*30 = 24

    Round up to 25

    80% decile = 54

(b) To determine 67th percentile

    Locator : 0.67^30 = 20.1

    Round up to 22

    67% percentile = 48