FREE Trial

A Danish study of individuals born at a Copenhagen hospital between 1959 and 1961 reported higher mean IQ scores for

Question:

A Danish study of individuals born at a Copenhagen hospital between 1959 and 1961 reported higher mean IQ scores for adults who were breast-fed for longer lengths of time as babies (E. Mortensen et al., JAMA, vol. 287, 2002, pp. 2365 – 2371). The mean IQ score was 98.1 (s = 15.9) for the 272 subjects who had been breast-fed for no longer than a month and 108.2 (s = 13.1) for the 104 subjects who had been breast-fed for seven to nine months.
a. With software that can analyze summarized data, use an inferential method to analyze whether the corresponding population means differ, assuming the population standard deviations are equal. Interpret.
b. Was this an experimental or an observational study? Can you think of a potential lurking variable?

This problem has been solved!


Do you need an answer to a question different from the above? Ask your question!

Step by Step Answer:

Answer rating: 33% (12 reviews)

a From software Difference mu 1 mu 2 Estimate for difference 10 1000 95 CI for difference 13 5414 6 …View the full answer


answer-question
Answered By
tutor-profile-image
Ashington Waweru
I am a lecturer, research writer and also a qualified financial analyst and accountant. I am qualified and articulate in many disciplines including English, Accounting, Finance, Quantitative spreadsheet analysis, Economics, and Statistics. I am an expert with sixteen years of experience in online industry-related work. I have a master's in business administration and a bachelor’s degree in education, accounting, and economics options. I am a writer and proofreading expert with sixteen years of experience in online writing, proofreading, and text editing. I have vast knowledge and experience in writing techniques and styles such as APA, ASA, MLA, Chicago, Turabian, IEEE, and many others. I am also an online blogger and research writer with sixteen years of writing and proofreading articles and reports. I have written many scripts and articles for blogs, and I also specialize in search engine I have sixteen years of experience in Excel data entry, Excel data analysis, R-studio quantitative analysis, SPSS quantitative analysis, research writing, and proofreading articles and reports. I will deliver the highest quality online and offline Excel, R, SPSS, and other spreadsheet solutions within your operational deadlines. I have also compiled many original Excel quantitative and text spreadsheets which solve client’s problems in my research writing career. I have extensive enterprise resource planning accounting, financial modeling, financial reporting, and company analysis: customer relationship management, enterprise resource planning, financial accounting projects, and corporate finance. I am articulate in psychology, engineering, nursing, counseling, project management, accounting, finance, quantitative spreadsheet analysis, statistical and economic analysis, among many other industry fields and academic disciplines. I work to solve problems and provide accurate and credible solutions and research reports in all industries in the global economy. I have taught and conducted masters and Ph.D. thesis research for specialists in Quantitative finance, Financial Accounting, Actuarial science, Macroeconomics, Microeconomics, Risk Management, Managerial Economics, Engineering Economics, Financial economics, Taxation and many other disciplines including water engineering, psychology, e-commerce, mechanical engineering, leadership and many others. I have developed many courses on online websites like Teachable and Thinkific. I also developed an accounting reporting automation software project for Utafiti sacco located at ILRI Uthiru Kenya when I was working there in year 2001. I am a mature, self-motivated worker who delivers high-quality, on-time reports which solve client’s problems accurately. I have written many academic and professional industry research papers and tutored many clients from college to university undergraduate, master's and Ph.D. students, and corporate professionals. I anticipate your hiring me. I know I will deliver the highest quality work you will find anywhere to award me your project work. Please note that I am looking for a long-term work relationship with you. I look forward to you delivering the best service to you.
3.00+ 2+ Reviews 10+ Question Solved
Related Book For  answer-question
Statistics The Art And Science Of Learning From Data

Statistics The Art And Science Of Learning From Data

ISBN: 9780321755940

3rd Edition

Authors: Alan Agresti, Christine A. Franklin

See More Books
View Solution
Create a free account to access the answer
Cannot find your solution?
Post a FREE question now and get an answer within minutes. * Average response time.
Question Posted: September 11, 2015 04:28:39
See More Questions

Students also viewed these Statistics questions

Q:
A Danish study published in the Archives of Internal Medicine casts significant doubt on suggestions that adults who drink wine have higher levels of good cholesterol and fewer heart attacks. These...
A:
a This study was an observational prospective study b The relationship between he......
Q:
A 2001 Danish study published in the Archives of Internal Medicine casts significant doubt on suggestions that adults who drink wine have higher levels of "good" cholesterol and fewer heart attacks....
A:
a This is a prospective observational study The researchers followed a gr......
Q:
Read the newspaper article and answer the following questions: (a) What is the research question the study addresses? (b) What is the sample? (c) What type of variable is season in which you were...
A:
a The research question is to determine if the seas......
Q:
Write the shear and momentfunctions and draw shear and moment diagrams for the following frames: (a) Support A is a roller, B and C are fixed and support C is a pin.
A:
Click to View...
Q:
Statement On January 1, 2016, Kittson Company had a retained earnings balance of $218,600. It is subject to a 30% corporate income tax rate. During 2016, Kittson earned net income of $67,000, and the...
A:
1 1 Retained Earnings 4 000 3 12 000 Dividends Payable 12 000 Dividends Payable 12 000 Cash 12 000 2......
Q:
A bar of length 2.0 m is made of a structural steel having the stress-strain diagram shown in the figure. The yield stress of the steel is 250 MPa and the slope of the initial linear part of the...
A:
STRESS AND STRAIN AT POINT B B Y 250 Mpa ELASTIC RECOVERY......
Q:
Classify the following accounts as real, personal or nominal: 1. Bank Account 2. Furniture Account 3. Salary Account 4. Cash Account 5. Rent Outstanding 6. Bank Overdraft 7. Capital Account 8. Sales...
A:
1 Personal A c Receivable or payable 2 Real A c A......
Q:
Record the following transactions on the books of Keyser Co. (a) On July 1,Keyser Co. sold merchandise on account to Maxfield Inc. for $15,200, terms 2/10, n/30. (b) On July 8, Maxfield Inc. returned...
A:
a Accounts Receivable 15 200 Sales 15 20......
Q:
Write a C++ program that defines a function called add2Integers(...). This function should take two integers, add them and returns the result of addition. Use this function in your program to check...
A:
C include Function to add two integers int add2Integers int num1 int num2 return num1 n......
Q:
Distant Ride, Inc. develops and makes a battery for electrical cars. The manufacturing costs per unit include $450 direct materials, $180 direct labor and $300 manufacturing overhead. These costs are...
A:
a Upstream costs 520 000 product design 1 800 000 research and development 2 320 000 b Downstream co......
Q:
Refer to Exercise 10.87, comparing mean weight changes in anorexic girls for cognitive behavioral therapy and a control group. The MINITAB output shows results of doing analyses while assuming equal...
A:
a We can be 95 confident that the population mean difference is between 0 7......
Q:
A study published by the National Cancer Institute (V. Kirsh et al., 2005) reported on the effect of lycopene and tomato product intake on the risk of prostate cancer. The study followed the health...
A:
a The relative risk of 0 68 indicates that in this study for th......
Q:
The following equilibrium data have been obtained for the adsorption of nitrogen dioxide, NO 2 , on silica gel at 25C and 1 atm: (a) Confirm that these data are reasonably correlated by the...
A:
Consider the given parameters from question a Frendlich isotherm b The absorber removes......
Q:
find out the output of the following program public public class Programl public static void main(String [] args) { int x = 6; int y = 3; if (x++ = 6) { } if ( ++x== 7) ( y += 3; }...
A:
Solution Here is the output of the following Java program public class Program public static void ma......
Q:
A cantilevered beam is loaded with a uniformly distributed load as shown below. If w = 750 N/m, what is the value of the load (N) at x = 4 m? For your answer use CCW as a (+) positive moment. (m) 0...
A:
The detailed answer for the above question is provided below SOLUTION 1 Give......
Q:
What is the final value of the variables result and a, and explain why? double a, result; int b=12, c=17; double d = 4; int e = 6; a = b/c; a = a/e; e = b%e; e=e+ (int)d; result = e - b;
A:
The final value of the variables result and a is a Let s go through the code step by step a b c 12 17 0 7058823529411765 a a e Since a is a double e w......
Q:
You are a hedge fund looking for arbitrage opportunities between the spot FX market and one year FX forwards and money markets. You observe the following quotes from market makers in these markets...
A:
Answer To calculate the profit we need to first determine the forward points spread between the spot rate and the forward rate The forward points spread is calculated as follows Forward Points Spread......
Q:
On January 1, 2018, Mion Company paid P2,000,000 for a property because of its potential as an investment. It is estimated that the land component of the project would cost P800,000, while the...
A:
Click to View...
Q:
The driving wheel of a car travelling at a constant velocity has a torque of 137 N m applied to it by the axle that drives the car (Figure 4.26). The radius of the tyre is 0.18m. Calculate the...
A:
To calculate the driving force provided by the wh......
Q:
Write a paper about the Working relationship in the organization- collaboration within and outside the organization
A:
In a health organization there are a number of departments interlinked and interdependent on one another Examples of such departments include medical......
Q:
n = 75, p = 0.75, x = 60 Compute P(x) using the binomial probability formula. Then determine whether the normal distribution can be used as an approximation for the binomial distribution. If so,...
A:
Using P x n C x P x 1 p nx with the parameters n 75 and p 0 75 we get P 60......
Q:
n = 85, p = 0.8, x = 70 Compute P(x) using the binomial probability formula. Then determine whether the normal distribution can be used as an approximation for the binomial distribution. If so,...
A:
Using P x n C x P x 1 P nx with the parameters n 85 and p 0 8 we......
Q:
According to American Airlines, Flight 215 from Orlando to Los Angeles is on time 90% of the time. Randomly select 150 ights and use the normal approximation to the binomial to (a) approximate the...
A:
From the parameters n 150 and p 0 9 we get 150 0 9 135 X np 150 0 9 135 and so the norma......
Communicating Airpower Strategic Communication And The United States Air Force Since 9/11 1st Edition - ISBN: 1463790872 - Free Book