Use the Following to Answer Questions

question 52

Short Answer

Use the following to answer questions :
You observe 100 randomly selected college students to find out whether they arrive on time or late for their classes.The table below gives a two-way classification for these students.

-For a chi-square test of independence for this contingency table,what are the expected frequencies for the second column,rounded to two decimal places?

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Definitions:

Population Average

The mean value of a characteristic within an entire population.

Standard Error

The standard deviation of the sampling distribution of a statistic, often used to estimate the accuracy of a sample mean compared to the population mean.

Sample Mean

The average of all observed values in a sample from a population.

Level of Significance

A statistical measure that determines the threshold at which a hypothesis test results in a rejection of the null hypothesis.