How many participants need to be enrolled in each group to, Ask an Expert

Statistics

Suppose we assume that the incidence of MI is .005 per year among participants who actually take placebo and that aspirin prevents 20% of MI (i.e. relative risk = p1/p2 = 0.8). We also assume that the duration of the study is 5 years and that the dropout rate in the aspirin group = 10% and the drop-in rate of the placebo group = 5 %.

How many participants need to be enrolled in each group to have 90% chance of detecting a significant difference using a two-sided test with a a= .05 if compliance is perfect?

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9359402

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

A population has a mean mu79 and anbspstandard deviation

A population has a mean μ=79 and a standard deviation σ=24. Find the mean and standard deviation of a sampling distribution of sample means with sample size n=248 μx= ?Simplify your? answer. σx= rounded to three decimal ...

A researcher records the following number of birdcalls made

A researcher records the following number of birdcalls made during an experimental session with robins: 8.4 0.9 (M SD). Assuming these data are normally distributed, what is the probability that robins made more than 11 ...

Discuss two types of costs amp two types of

Discuss two types of costs & two types of benefits(excluding tax shield and EPS) that would potentially arise from the leveraged recapitalization( a firm proposed a leveraged recapitalization which could create immediate ...

Your client is going to be traveling to las vegas in the

Your client is going to be traveling to Las Vegas in the near future and he wants to place some bets on his favorite professional baseball team. To ensure he knows the odds on his bets he wants to know the probability of ...

Can someone explain this to me or draw it out so that i can

Can someone explain this to me? Or draw it out so that I can understand. You may see a problem like the following: a mean score of 20 and SD of 3, and asked what percentage of cases will be between 17 and 23, you would r ...

Question suppose we wanted to conduct a survey it is

Question: Suppose we wanted to conduct a survey. It is desired that we produce an interval estimate of the population mean that is ±5 from the true population mean with 99% confidence. Based on a historical planning valu ...

Youve finally decided to retire at the ripe old age of 50

You've finally decided to retire at the ripe old age of 50, and due to some fancy investing, you have accumulated $750,000 in mutual funds. Based upon genetics, you're likely to live until you're 80. Since you've taken t ...

1 let random variable x represent the

1. Let random variable x represent the number of heads when a fair coin is tossed two times. (a) Construct a table describing the probability distribution. x P(x) 0 1 2 Determine the mean and standard deviation of x.

A what is the purpose of credit analysis discuss the

(a) What is the purpose of credit analysis? Discuss the importance of performing a credit analysis if you are suppliers of credit (i.e., commercial banks, non-bank private financing entities).

Jeremy needs to start paying back his student loan the

Jeremy needs to start paying back his student loan. The amount he owes is $14,069.80 with an APR of 6.94%. Assuming he will take 10 years, how much will his monthly payment be?

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert