Question: 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

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.

256 345 306 291 271

262 334 285 299 265

268 308 376 291 272

269 258 292 278 298

Find a 99% confidence interval for the mean maximum sentence of all murders. Assume a population standard deviation of 25 months.

The confidence interval is from ..........months to ............months.

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