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Chris Columbus is responsible for controlling inventory levels for four types of sailboats sold by his company. Chris takes a sample of 48 boats sold over the past several months to determine if demand is the same for each type. His results are as follows:
Type of Boat Sales
Pirate's Revenge 15
Jolly Roger 11
Sails Delight 10
Cruiser Cove 12
-The correct null hypothesis to be tested is
A) Type of boat and demand are related.
B) The demand differs for each type of boat.
C) The demand is the same for each type of boat.
D) Type of boat and demand are related and the demand differs for each type of boat.
E) Type of boat and demand are related and the demand is the same for each type of boat.

Question

Quizplus · Accepted Answer

The null hypothesis is always the opposite of what is being tested or the assumption that there is no difference or no relationship. Here, the assumption being tested is whether the demand is the same for each type of boat. Therefore, the correct null hypothesis is "the demand is the same for each type of boat."

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