Exhibit 13-1A researcher believes that women today weigh les…

Exhibit 13-1A researcher believes that women today weigh less than in previous years. To investigate this belief, he randomly samples 41 adult women and records their weights. The scores have a mean of 111 lbs. and a standard deviation of 12.4. A local census taken several years ago shows the mean weight of adult women was 115 lbs.Refer to Exhibit 13-1. The df for determining tcrit = ____.

In the system shown below each bungee has the same stiffness…

In the system shown below each bungee has the same stiffness, but the rope has a stiffness three times greater than each bungee cord.  Assume the horizontal member transmitting 100 lb to the bungees and rope remains horizontal.  What is the force in the rope?