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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:

Major Events

Significant occurrences or milestones that have a profound impact on individuals or communities.

Philippe Pinel

A French physician credited with pioneering humane treatment and moral therapy for the mentally ill in the late 18th and early 19th centuries.

William Tuke

A pioneering figure in the reform of mental health care in the 18th century, he founded the York Retreat which emphasized humane treatment for the mentally ill.

Psychological Abnormality

Conditions or behaviors that deviate significantly from what is considered typical or healthy in a psychological context.