A Student Wanted to See If the Median Number of Facebook

question 55

Short Answer

A student wanted to see if the median number of Facebook friends is more than 200. For a random
sample of 42 people, 30 people had more than 200 friends while the rest had less than 200 friends. Find
the value of the test statistic.

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Definitions:

Alpha Level

The threshold of significance in hypothesis testing, representing the probability of making a Type I error.

Confidence Interval

A range of values, derived from sample statistics, used to estimate the true parameter of a population with a specified level of confidence.

Null Hypothesis

A statement in statistical hypothesis testing that proposes no significant difference or effect, assumed true until evidence suggests otherwise.

Two-Tail Test

A statistical test where the critical area of a distribution is two-sided and tests whether a sample is either greater than or less than a certain range of values.