An investigator wants to estimate caffeine consumption in

Assignment Help Other Subject
Reference no: EM13472647

1.Suppose we want to design a new placebo-controlled trial to evaluate an experimental medication to increase lung capacity. The primary outcome is peak expiratory flow rate, a continuous variable measured in liters per minute. The primary outcome will be measured after 6 months on treatment. The expected peak expiratory flow rate in adults is 300 with a standard deviation of 50. How many subjects should be enrolled to ensure 80% power to detect a difference of 15 liters per minute with a two sided test and ?=0.05?

2.An investigator wants to estimate caffeine consumption in high school students. How many students would be required to ensure that a 95% confidence interval estimate for the mean caffeine intake (measured in mg) is within 15 units of the true mean? Assume that the standard deviation in caffeine intake is 68 mg.

Reference no: EM13472647

Questions Cloud

Find the values of b0 and b1 using the method of regression : an engineer in charge of process improvement wants to study the relationship between the total number of hours of
Discuss the importance of diagramming tools for process : discuss the importance of diagramming tools for process modeling. without such tools what would analysts do to model
Estimate the simple linear regression equation relating : 1.consider the following data measured in a sample of n25 undergraduates in an on-campus survey of health behaviors.
Select one of the system development approaches : select one of the system development approaches structured information engineering and object-oriented and give an
An investigator wants to estimate caffeine consumption in : 1.suppose we want to design a new placebo-controlled trial to evaluate an experimental medication to increase lung
A 10 foot ladder is leaning against a building with the : a 10 foot ladder is leaning against a building with the base of a ladder 2 feet from the building. how high up on the
The manufacturer of the x-15 steel-belted radial truck tire : 1. the manufacturer of the x-15 steel-belted radial truck tire claims that the mean mileage the tire can be driven
The measures of three angles of a quadrilateral are given : the measures of three angles of a quadrilateral are given. find the measure of the fourth angle.80 degrees 120 degrees
The human relations department of electronics inc would : 1. a random sample of 75 group leaders supervisors and similar personnel at general motors revealed that on average

Reviews

Write a Review

Other Subject Questions & Answers

  Aspproaches to personality theory

Explain the 6 approaches to personality theory, and describe how each approach views aggression or depression.

  Punctuated equilibrium model of group development

The punctuated equilibrium model of group development emphasizes the importance of establishing deadlines and milestones.

  Types of aggression prevalent in the workplace violence

Briefly describe the types of aggression that are prevalent in the workplace violence. Then, briefly describe the theories that might best explain the types of aggression found in workplace setting, applying the theories to specific examples.

  Discuss the distinguishing resources

Discuss the ‘distinguishing resources’ that makes Luzerne and its surroundings such a unique destination for tourism.

  Short-term physical and psychological effects

What is the most widely used illicit drug in the United States? Under what class of drugs is it listed and what are its short-term physical and psychological effects at low to moderate doses?

  Explain the two most memorable areas of service and

choose a recent experience in one of three areas of the hospitality industry food service lodging or travel and

  Topic from the book of romans

Identify and discuss the major issue(s) associated with the topic from the book of Romans, and list four application based principles for life today.

  Interaction between religion and science

Use two examples to mount an argument whether interaction between religion and science has been positive, negative or combination of both in 17th century.

  Usage of content on a web site

discussing the implications of copyrights on the usage of content on a Web site.

  Reliability-validity-legality of appraisal ratings

Review of suggestions to improve the reliability, validity, and therefore, the legality, and usefulness of appraisal ratings are given.

  Feasibility of implementing gis in an everyday business

Your task is to write a report about the feasibility of implementing GIS in an everyday business. Your study must focus on the feasibility of developing and implementing a brand new full-blown GIS in a bank (A hypothetical GIS department to conduct l..

  Explain extent and nature of the disorder like number of

you have conducted field research on practice related to the disorder including the interview with a health

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd