Random Samples of Size 81 Are Taken from a Process

question 38

Multiple Choice

Random samples of size 81 are taken from a process (an infinite population) whose mean and standard deviation are 200 and 18, respectively. The distribution of the population is unknown. The mean and the standard error of the distribution of sample means are _____.

• A) 200 and 18
• B) 81 and 18
• C) 9 and 2
• D) 200 and 2

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Definitions:

Hookworms

Parasitic nematodes that live in the small intestine of their hosts, potentially causing anemia and other health issues through blood loss at the site of attachment.

Pinworms

Small, parasitic worms that primarily infect the intestines, often causing itching around the anus.

Tapeworms

Parasitic flatworms that live in the digestive tracts of vertebrates, including humans, potentially causing various health issues depending on the species.

Dormant

In a state of inactivity or dormancy, not currently active but with the potential to become active.