Assumed that the standard deviation of the difference in, Ask an Expert

Statistics

A crossover trial is planned to evaluate the impact of an educational intervention program to reduce alcohol consumption in patients determined to be risk for alcohol problems. The plan is to measure alcohol consumption ( the number of drinks on a typical drinking day) before the intervention and then again after participants complete the educational intervention program. How many participants would be required to ensure that a 95% confidence interval for the mean difference in the number of drinks is within two drinks of the true mean? Assumed that the standard deviation of the difference in the mean number of drinks is 6.7 drinks.

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9372845

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

The time to complete 1 construction project for company a

The time to complete 1 construction project for company A is exponentially distributed with a mean of 1 year. Therefore: (a) What is the probability that a project will be finished in one and half years? (b) What is the ...

Do you have a credit card or use some other form of

Do you have a credit card or use some other form of consumer credit? Identify what you currently use, if any. If you do not use credit, discuss a type of credit that you might consider in the future. What advantages does ...

If a wooden car has 30 independent components that all must

If a wooden car has 30 independent components that all must function for the wooden car to operate successfully during a race, and the probability of successful operation for any single component is 0.999, what is the pr ...

Annbspe-commerce web site claims thatnbsp8nbspof people who

An? e-commerce Web site claims that 8?% of people who visit the site make a purchase. Complete parts a through e below based on a random sample of 15 people who visited the Web site. a. What is the probability that none ...

A brewery pulls 905 bottles of beer to sample them for

A brewery pulls 905 bottles of beer to sample them for quality control . in the past there has been a 0.12 probability that a bottle of beer is defective. Assuming this trend continues, what is the probability that fewer ...

The table shows the results of a survey in which 400 adults

The table shows the results of a survey in which 400 adults from the? East, 400 adults from the? South, 400 adults from the? Midwest, and 400 adults from the West were asked if traffic congestion is a serious problem. Co ...

What is the difference between a linear quadratic and cubic

What is the difference between a linear, quadratic, and cubic regression analysis? Please provide a reference.

What would be the net annual cost of the following checking

What would be the net annual cost of the following checking account? Interest earnings of 3 percent with a $550 minimum balance; average monthly balance, $800; monthly service charge of $15 for falling below the minimum ...

A population has a mean of 400 and a standard deviation of

A population has a mean of 400 and a standard deviation of 50. Suppose a sample of size 125 is selected and is used to estimate . Use z-table. 1) What is the probability that the sample mean will be within +/- 6 of the p ...

Question in each of the following random experiments

Question: In each of the following random experiments, describe the sample space S for the experiment. Then use your intuition and experience to assign a value to the probability p of each of the events A occurring. a. T ...

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