To See How Much of a Difference Time of Day

question 20

Essay

To see how much of a difference time of day made on the speed at which he could download files,a university student performed an experiment.He place a file on a remote server and then proceeded to download it during three different time periods.For each time period,he downloaded the file 6 times and recorded the time,in seconds,it took to complete the download.Conduct a Kruskal-Wallis test to determine if there are differences between the three time periods in terms of the downloading speed.Use a 0.01 level of significance. $$\begin{array} { c c c } \text { Maming } & \text { Afternann } & \text { Evening } \\\hline 68 & 299 & 216 \\\hline 138 & 367 & 175 \\75 & 331 & 274 \\186 & 257 & 171 \\69 & 260 & 187 \\217 & 269 & 213\end{array}$$

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Definitions:

Sample Size

The number of observations or data points collected in a study, used to make inferences about a population.

Standard Error

A statistical measure that quantifies the amount of variation or dispersion of a sample statistic compared to the true population parameter.

Standard Deviation

A statistic that measures the dispersion or variability of a dataset relative to its mean.

Sample Size

The number of observations or data points collected in a study, which impacts the study’s ability to detect meaningful effects or differences.