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An auto parts store is examining how many items were purchased per transaction at the store as compared to their online website. The data are summarized in the following frequency table. 1-3 4-6 7-9 10-12 Total On-site Purchase 107 43 17 13 180 Online Purchase 40 60 15 5 120 Total 147 103 32 18 300 What is the probability that a randomly selected item was purchased online?

Respuesta :

Answer:

0.4394

Step-by-step explanation:

given that an auto parts store is examining how many items were purchased per transaction at the store as compared to their online website

The data is shown below:

             Frequency  Frequency*Midpt  

    Midpt Online Total Online Total

1-3     2      40 147             80 294

4-6         5      60 103            300 515

7-9         8     15 32           120 256

10-12 11       5 18             55 198

           120       300            555 1263

Thus we find total items purchased on line = 555

and total items overall purchased = 1263

Hence the probability that a randomly selected item was purchased online

=[tex]\frac{555}{1263} \\=0.4394[/tex]

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