There is concern that the Type 2 diabetes drug Avandia raisesthe risk of having a heart attack. The general population of peoplewith Type 2 diabetes has a 20.2% chance of heart attack within 7years. In a random sample of 4,485 people with Type 2 diabetes andwho used Avandia, 28.9% of these individuals had a heart attackwithin 7 years. If researchers want to compute the z-test for thisdata, what assumption should they check?
A) because the sample size is large enough, they dont have tocheck any assumptions
B)They Need to check both 4485 x .202 and 4485 x (1-.202) are atleast 10
Please explain
