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Statistics in tendon surgery, free throws and mean number

You have torn a tendon and are facing surgery to repair it. The surgeon explains the risks to you: infection occurs in 3%of such operations, repair fails in 14%, and both infection and failure occur together in 1 %. What % of these operations succeed and are free from infection? Follow the four step process using a Venn diagram.

A basketball player makes 70% of her free throws. She takes 7 free throws in a game. If the shots are independent of each other, the probability that she makes 5 out of 7 shots are about:

Ten lines in the table contain 400 digits. The count of 0's in these lines is approximately Normal with:

The probability of finding exactly four 0's in a line of 40 digits long is:

A basketball player makes 70% of her free throws. She take 7 free throws in a game. If the shots are independent of each other, the probability that she makes the first 5 and misses the last 2 is about:
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