Thom works at a clothing store. When a customer returns an item, Thom has to sort the item according to its brand. A customer has just returned a t-shirt. Though the store only carries two brands of t-shirts (CK and Lacoste), this t-shirt is missing the tag that indicates the brand. However, there is another tag that indicates the t-shit was made in Indonesia. While 90% of CK t-shirts are made in Indonesia, only 5% of Lacoste t-shirts are made in Indonesia. Thom therefore wonders whether this is a CK t-shirt. What is the strength factor of Thom's evidence?