The Amount of Time It Takes to Complete an Examination

question 42

True/False

The amount of time it takes to complete an examination has a left skewed distribution with a mean of 65 minutes and a standard deviation of 8 minutes.If 64 students were randomly sampled,the probability that the sample mean of the sampled students exceeds 71 minutes is approximately 0.

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Definitions:

Probability

Probability is the measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Statistic

A single measure, calculated from sample data, used to summarize a characteristic of the sample.

Critical Value

A point on the scale of a test statistic beyond which the null hypothesis is rejected, often determined by the desired significance level.

Null Hypothesis

A hypothesis that assumes no statistical significance or relationship between the variables studied, serving as a default position until evidence suggests otherwise.