A Random Sample of 64 Items Is Selected from a Population

question 59

Multiple Choice

A random sample of 64 items is selected from a population of 400 items.The sample mean is 200. The population standard deviation is 48.From this data,a 90% confidence interval to estimate the population mean can be computed as _______.

• A) 189.21 to 210.79
• B) 188.24 to 211.76
• C) 190.13 to 209.87
• D) 190.94 to 209.06
• E) 193.45 to 211.09

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Definitions:

Cones

Photoreceptor cells in the retina of the eye that function best in bright light and enable color vision.

Dim Light

Low-intensity lighting that is not bright enough to cause full alertness and is commonly used in settings to promote relaxation.

Optic Disc

The point in the eye where the optic nerve fibers exit the retina, often referred to as the blind spot because it lacks light-sensitive cells.

Papilledema

Swelling of the optic disc due to increased intracranial pressure, often associated with symptoms like headaches and visual disturbances.