Distribution Free hypothesis Testing: One Sample Wilcoxon Signed Rank Test Example (1)

The median lifetime of a certain brand of battery is claimed to be 300 hours. A random sample of 15 of these batteries is taken and their lifetimes recorded 342 393 257 339 306 278 265 216 402 190 302 289 312 249 178 Use a Wilcoxon signed-ranked test at the 5% significance level to test whether the claim that the median is 300 hours is justified Recorded with https://screencast-o-matic.com