The Net Weights (In Grams) of a Sample of Bottles

Multiple Choice

The net weights (in grams) of a sample of bottles filled by a machine manufactured by Edne, and the
Net weights of a sample filled by a similar machine manufactured by Orno, Inc., are:
Testing the claim at the 0.05 level that the mean weight of the bottles filled by the Orno machine is
Greater than the mean weight of the bottles filled by the Edne machine, what is the critical value of
T? Assume equal standard deviations for both samples.

A) +2.179
B) +2.145
C) +1.782
D) +1.761