It seems these days...

It seems these days that college graduates who are employed full-time work more than 40-hour weeks. Data are available that can help us decide if this is true. A survey was recently sent to a group of adults selected at random. There were II respondents who were college graduates employed full-time. The mean number of hours worked per week by these II respondents was 46 hours, with a standard deviation of 10 hours. Assume that the population of hours worked per week by college graduates employed full-time is normally distributed with mean ,. Can we conclude that , is greater than 40 hours? Use the o. level of significance. Perform a one-tailed test. Then fill in the table below. Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. The null hypothesis: S The alternative hypothesis: #, :0 The type of test statistic: [Choose one) 020 The value of the test statistic: Round to at least three decimal places. ] 0 X 5 The critical waive at the 0. I level of significance: (Round to at least three 0 decimal places.) Can we conclude, at the 0.1 level of significance, that the mean number of hours worked per week Yes O No by college graduates is greater than 40 hours