The data below give the weights in ounces of randomly-selected bars of bath soap produced by two different molding machines. The question of interest is whether these two molding machines produce soap bars of differing average weight. Find a 95% confidence interval for the population difference assuming that the weights for the two machines are approximately normal.
A)(-1.760, -0.091)
B)(-1.200, -0.464)
C)(-0.354, 0.173)
D)(-1.280, -0.384)

Question

The data below give the weights in ounces of randomly-selected bars of bath soap produced by two different molding machines.  The question of interest is whether these two molding machines produce soap bars of differing average weight. Find a 95% confidence interval for the population difference assuming that the weights for the two machines are approximately normal.
A)(-1.760, -0.091) 
B)(-1.200, -0.464) 
C)(-0.354, 0.173) 
D)(-1.280, -0.384)

Quizplus · Accepted Answer

The Answer is D

The Data Below Give the Weights in Ounces of Randomly-Selected