Question
3. A new cold medication was tested by giving 125 people the drug and 100 people a placebo. A control group consisted of 115 people
3. A new cold medication was tested by giving 125 people the drug and 100 people a placebo. A control group consisted of 115 people who were given no treatment. The number of people in each group who showed improvement is shown in the table below.
Cold Drug
Placebo
Control
Total
Improvement
72
55
38
165
No Improvement
53
45
77
175
Total
125
100
115
340
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 either was given the drug or improved? _____________
c) What is the probability that a randomly selected person 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 these data, does the drug appear to be effective? ____________
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started
An Introduction to the Mathematics of financial Derivatives
Authors: Salih N. Neftci
2nd Edition
978-0125153928, 9780080478647, 125153929, 978-0123846822
