Diabetes:

advandia is a drug used to treat diabetes, but it may cause an increase in heart attacks among a population already susceptible. a large study found that out of 1,456 diabetics who were treated with avandia, 27 of them had a heart attack during the study period. this was compared with 41 heart attacks among a group of 2,895 participants who were given other treatments for their diabetes. the researchers want to determine if there is evidence to suggest that there is a significant increase in the proportion of people who suffer heart attacks when using avandia compared to other treatments.

a)are these proportions from matched-pairs data?

b)what is the result of the appropriate hypothesis test, using ? = 0.05 level of significance? (note: list out each step in your hypothesis testing procedure and show all of your work.)

step 1:
step 2:
step 3:
step 4:
step 5:

Step-by-step explanation:

Given that Advandia is a drug used to treat diabetes, but it may cause an increase in heart attacks among a population already susceptible.

Sample size n =1`456

Sample proportion of persons having heart attack p1= 27/1456 = 0.0186

II sample

Size = 2895

p2 = sample proportion = 41/2895 = 0.0142

a) Not matched pair data but independent proportions

b)

Step 1:  

(right tailed test at 5% significance level)

Step 2:  Test statistic z = 1.0995

Step 3:  p value = 0.13567

Step 4:  Since p >0.05 accept null hypothesis.

There is no evidence to suggest that there is a significant increase in the proportion of people who suffer heart attacks when using Avandia compared to other treatments.

Step 5:

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.