Testing a drug. A new cold medication was tested by giving 100 people the drug and 100 people a placebo. A control group consisted of 100 people who were given no treatment. The number of people in each group who showed improvement in the table below.

a.What is the probability that a randomly selected person in the study either was given the placebo or was in the control group?

b.What is the probability that a randomly selected person improved?

c.What is the probability that a randomly selected was given the drug and improved?

d.What is the probability that a randomly selected person who improved was given the drug?

e.What is the probability that a randomly selected person who was given the drug improved?

f.Based on this data, does the drug to be effective? Explain.

This is an even number and my math book does not given solutions to the problem. This is for Math 140. Sacramento City College.

Cold drug Placebo Control Total Improvement 70 55 20 145 S No improvement 30 45 80 155 Total 100 100 100 300 a. What is the probability that a randomly selected person in the study either was given the placebo or was in the control