900 Secondary School Students Are Selected Randomly from Across the Country

question 16

Multiple Choice

900 secondary school students are selected randomly from across the country because they have achieved 10 GCSEs at grade A -C.There is a standard deviation of 0.4.Assuming a 95% confidence rate,what is the margin of error?

• A)0.011
• B)0.025
• C)0.178
• D)0.555

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Definitions:

Hypnosis

A trance-like state of focused attention, reduced peripheral awareness, and enhanced capacity to respond to suggestion.

Ordinary Memories

Refer to the typical or everyday recollections that individuals have about their past experiences.

Phi Effect

An optical illusion of perceived motion created when stationary objects—shown in sequence—are viewed rapidly one after another.

Impostors

Individuals who doubt their accomplishments and fear being exposed as a "fraud," despite evidence of their competence.