Valid DY0-001 Dumps shared by ExamDiscuss.com for Helping Passing DY0-001 Exam! ExamDiscuss.com now offer the newest DY0-001 exam dumps, the ExamDiscuss.com DY0-001 exam questions have been updated and answers have been corrected get the newest ExamDiscuss.com DY0-001 dumps with Test Engine here:
Which of the following distributions would be best to use for hypothesis testing on a data set with 20 observations?
Correct Answer: D
# For small sample sizes (typically n < 30), the Student's t-distribution is preferred over the normal distribution for hypothesis testing because it accounts for the added uncertainty in the estimate of the standard deviation. With 20 observations, the t-distribution is more appropriate and reliable. Why the other options are incorrect: * A: Power law is used in modeling rare events or heavy-tailed distributions, not hypothesis testing. * B: The normal distribution is more appropriate when the sample size is large. * C: Uniform distribution assumes equal probability - not used in inferential statistics. Official References: * CompTIA DataX (DY0-001) Study Guide - Section 1.3:"The t-distribution is used for small sample hypothesis testing where the population standard deviation is unknown." -
