STATISTICS IN ACTION (2, 13), respectively. Applying Chebyshev's Rule, we know that between 2 REVISTED gill-givers in the study reported an appreciation level bet least 75% of the gift-recipients reported an appreciation level bot (continued) Again, the upper endpoint of the interval for givers lies below we infer that overall levels of appreciation reported by gift-reci than those reported by gift-givers. Now, how does this information help the researchers dete "significant" differences in the means for gift-givers and gift- and 7 we present inferential methods that will answer such measure of reliability for the inference. Exercises 2.71-2.89 Learning the Mechanics you used to estima 2.71 The output from a statistical software package indicates standard deviation that the mean and standard deviation of a data set Explain. consisting of 200 measurements are $1,500 and $300, respectively. Applying the C a. What are the units of measurement of the variable of 2.76 Voltage sags interest? Based on the units, what type of data is this: former is me quantitative or qualitative? causes of po b. What can be said about the number of measurements sag is an un between $900 and $2,100? Between $600 and $2,400? the voltage Between $1,200 and $1,800? Between $1,500 and transforme $2,100? Engineerin ers built For any