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Mathematics, 27.03.2021 07:00 youngsiron
Suppose the researchers had been able to randomize 1,000 persons (randomly selected from the same
population of persons with migraine headaches) to receive Acupuncture treatments. Suppose a histogram is a
made of individual headache severity scores (three months post-randomization) for these 1,000 individuals. Cot
Which of the following likely describes this histogram?
The
The histograrn will look approximately like a normal distribution because the sample size is large so the Central
Limit Theorem applies.
nu
he histogram will look like a t-distribution with 999 degrees of freedom.
8
The histogram will appear to be right (positively) skewed, with similar mean and standard deviation as the sample D
of n=173.
h
The histogram will appear to be right skewed with a similar mean as the sample of n=173, but with standard
deviation equal to (16 divided by the square root of 1.000).
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Suppose the researchers had been able to randomize 1,000 persons (randomly selected from the same
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