A new drug is being tested to see if it alleviates the effects of vertigo. 16 who have vertigo volunteered to participate in the study. 8 people were given the drug and 8 people were not given the drug. The number of dizzy spells suffered in a month is recorded in the table below.
Drug 3 3 2 4 3 4 3 5
Placebo 3 3 5 5 7 5 5 4
Is there evidence at a .05 level of significance that the drug decreases the amount of dizzy spells?