A random sample of
20
maximum sentences for murder yielded the data, in months, presented to the right. Use the technology of your choice to complete parts (a) through (d) below.
259 346 308 291 271 264 333 286 293 267 263 309 372 297 271 268 258 294 272 294 a. Find a
90%
confidence interval for the mean maximum sentence of all murders. Assume a population standard deviation of
35
months.
The confidence interval is from
enter your response here
months to
enter your response here
months.
(Type integers or decimals rounded to one decimal place as needed.)
Any insight would be greatly appreciated, I can't figure out what I'm doing wrong!
thanks!