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A Researcher Wishes to Determine If Students Are Able to Complete

question 7

Multiple Choice

A researcher wishes to determine if students are able to complete a certain puzzle more quickly while exposed to a pleasant floral scent. Suppose the time (in seconds) needed for high school students to complete the puzzle while exposed to the scent follows a normal distribution with mean  and standard deviation  = 4. Suppose also, that in the general population of all high school students, the time needed to complete the puzzle follows a normal distribution with mean 80 and standard deviation  = 4. The researcher, therefore, decides to test the hypotheses:
H₀:  = 80 H_a:  < 80
To do so, the researcher has 10,000 high school students complete the puzzle in the presence of the floral scent. The mean time for these students is

= 79.8 seconds and the P-value is less than 0.0001.
Suppose that two high school students decide to see if they get the same results as the researcher. They both do the puzzle while in the presence of the pleasant floral scent. The mean of their times is 80.2 seconds, the same as that of the researcher. It is appropriate to conclude which of the following:

Definitions:

Demand

The desire and willingness of consumers to purchase goods or services at a given price over a specific time period.

Capacity

Pertains to the highest amount of production a business can maintain for creating a product or delivering a service.

Supply Chain

A network between a company and its suppliers to produce and distribute a specific product to the final buyer, involving the flow of materials, information, and finances.

Efficiency

The degree to which an organization or process accomplishes its intended goals with a minimum of waste, expense, or unnecessary effort.