Three friends own a landscaping buiness. the number of hours each friend spent on the same project is shown in the table below. edgar: 17 1/4kelly: 18 1/4shawn: 14 1/2in total, they earned $850 for the job, they put 15% of this amount into a joint savings account for future expenses, they then divided the rest proportionally based on the number of hours each worked. how much money did shawn receive? show your work. a) $209.53b) $240.83c) $283.48d) $295.11

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.