According to researchers, the mean length of imprisonment for motor-vehicle-theft offenders in a nation is 15.1 months. One hundred randomly selected motor-vehicle-theft offenders in a city in the nation had a mean length of imprisonment of 15.9 months. At the 5% significance level, do the data provide sufficient evidence to conclude that the mean length of imprisonment for motor-vehicle-theft offenders in the city differs from the national mean? Assume that the population standard deviation of the lengths of imprisonment for motor-vehicle-theft offenders in the city is 5.0 months. Click here to view page 1 of the table of areas under the standard normal curve, Click here to view page 2 of the table of areas under the standard normal curve. ..... Set up the hypotheses for the one-mean z-test. Ho: H Ha: (Type integers or decimals. Do not round.) The test statistic is z= (Round to two decimal places as needed.)

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