Chapter 17, Problem 78E

Thirsty? Researchers randomly assigned participants either a tall, thin “highball” glass or a short, wide “tumbler,” each of which held 355 ml. Participants were asked to pour a shot (1.5 oz = 44.3 ml) into their glass. Did the shape of the glass make a difference in how much liquid they poured? Here are the summaries:

Highball		Tumbler
n	99	n	99
ӯ	42.2 ml	ӯ	60.9 ml
s	16.2 ml	s	17.9 ml

Test an appropriate hypothesis and state your conclusions. For assumptions and conditions that you cannot test, you may assume that they are sufficiently satisfied to proceed.