Question

2.8.1I buy light bulbs from thrre different stores. Meijer (35%), Kroger (20%) and Target. (45%). In the past, I found that1% of Meijer's bulbs are faulty and 1.5% of Kroger's

and Target's bulbs are also faulty IfI buy a bulb online without looking from which store, in other words it's a random choice. When I get it in the mail, I find that bulb is faulty What is the probahility that it was from Target?

Fig: 1