Quant Interview Questions #3 | Bayes Theorem

After 415 job applications, I got my Quant job, here's what I learnt:    • Applied to 415 Quant Jobs, Learn From My M...  
STEM Students: Do THIS, Beak into Quant Finance:    • STEM Student? Break Into Quant Finance!  

Copy my EXACT resume and cover letter, Kick start your quant applications with a 33%-DISCOUNT Fall Application Sale using code RRWDV1T4
buymeacoffee.com/myquantitative/extras

Step-by-step walkthrough of a technical interview question involving an application of Bayes Theorem.

Suitable for Quantitative Researcher, Quantitative Developer, Desk Quant and Data Scientist technical interviews

Question:
On the morning of January 1st, a hospital nursery has 3 boys and some girls. That night, a woman gives birth to a child and the child is placed in the nursery. On January 2nd, a statistician conducts a survey and selects a child at random from the nursery (including the newborn from the night before and every child already present from the morning of January 1st). The child picked is a boy.What is the probability that child born on January 1st was a boy?


Free Resources:
Free Excel List of Firms Google Drive: shorturl.at/vMUX8

Question Source:

#quant #interviewquestion #interview #statistics #probability