Researchers at the University of Houston decided to test the hypothesis that res
ID: 2618200 • Letter: R
Question
Researchers at the University of Houston decided to test the hypothesis that restaurant servers who squat to the level of their customers would receive a larger tip.T In the experiment, the waiter would flip a coin to determine whether he would stand or squat next to the table. The waiter would record the amount of the bill and of the tip and whether he stood or squatted. (a) Describe the treatments. (Select all that apply.) the customer standing squatting amount of tip the waiter Describe the response variable. (Select all that apply.) the customer ? standing squatting amount of tip the waiter (b Dcuss possible extraneous variables and how they could be controlled. (Select all that apply) The behavior of the server. He can keep constant his manner and speed of service The amount of the tip. This can be handled by the coin flip. The behavior of the customer. The waiter can control this by standing when he serves them. The food ordered. This can be handled by the coin flip.Explanation / Answer
ANSWER:
A) The treatment by the waiter is either standing or squatting depending upon the face of the coin.
The response variable would be whether the waiter is squatting or standing.
B) The possible extraneous variable would be The behavior of the customer. The waiter can control this
by standing when he serves them.
REASON: As the food might spill on the table due to the action performed by the waiter if he is not standing. Also, it may look awkward if the waiter trying to Squat were he should be standing and vice versa.
C) Blocking would not be appropriate as the coin flip would handle most of these extraneous variables.
D) The possible confounding variable will be the group of customers versus individual customer.
REASON: As it would be easier for the waiter to squat/stand (depending upon the face of the coin) if there would be an individual customer as he have to concentrate only at a single point. while if there are a group of customers there are multiple points of attention and due to which the waiter might get confused while asking for orders and he might be standing in the place where he should be squatting and vice versa.
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