Question

1. A researcher wishes to see if the five ways (drinking decaffeinated beverages, taking a nap, going for a walk, eating a sugary snack, other) people use to combat midday drowsiness are equally distributed among office workers. A sample of 60 office workers is selected, and the following data are obtained, At α = 0.10, can it be concluded that there is no preference?

Method           Beverage                     Nap                 Walk                Snack               Other

                        Obs., Exp                     Obs., Exp         Obs., Exp         Obs., Exp         Obs., Exp

Number           21                                16                    10                    8                      5

Answer 1

H0 : drinking decaffeinated beverages, taking a nap, going for a walk, eating a sugary snack, other are equally distributed among office workers.

H1 : drinking decaffeinated beverages, taking a nap, going for a walk, eating a sugary snack, other are NOT equally distributed among office workers.

(H0 is rejected because P-value < alpha)