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vlada-n [284]
3 years ago
11

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?
Mathematics
1 answer:
anastassius [24]3 years ago
4 0

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

=\frac{555}{1263} \\=0.4394

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