=+and technology give them more control over their lives. A subset of the data from this survey shows the mean ages of two groups of respondents, those who reported that they believed that computers and technology give them “more”

control and those that reported “less” control.

Group N Mean StDev Min Q1 Med Q3 Max More 74 54.42 19.65 18 41.5 53.5 68.5 99.0 Less 29 54.34 18.57 20 41.0 58.0 70.0 84.0

a) Write the null and alternative hypotheses.