The correct answer is A. William Gosset.
Gosset was an English statistician, chemist, and brewer. He is best known for his work on small-sample statistics, and for inventing the Student’s t-distribution, which is widely used in statistics. Gosset published his work under the pseudonym “Student” in order to protect his employer, the Guinness Brewery, from any potential negative publicity.
The Student’s t-distribution is a probability distribution that is used to estimate the mean of a population when the sample size is small. It is a symmetrical distribution that is more spread out than the normal distribution. The Student’s t-distribution is often used in hypothesis testing and confidence interval estimation.
Gosset’s work on small-sample statistics was groundbreaking, and it has had a major impact on the field of statistics. His work is still used today by statisticians and researchers around the world.
Options B and C are incorrect because they do not name the correct scientist. Option D is incorrect because it is not a valid option.