Statistical inference, Basic Statistics

Assignment Help:

A study was conducted at a major north-eastern American medical centre regarding blood cholesterol levels and heart-attack incidents. A total of 28 heart-attack patients had their cholesterol levels measured two days and four days after the attack. The units of measurement are milligrams per decilitre (mg/dL). The data are given below.

2078_STATISTICAL INFERENCE.png

Investigate whether there is evidence that the mean cholesterol level two days after a heart attack is different from that four days after a heart attack.

1. State the model behind the appropriate t-test, and assess those assumptions for which suf?cient information has been provided. (You are given that your assessment will not reveal any problems with the model and that the t-test is appropriate.)

2. Clearly state the appropriate null hypothesis and carry out the t-test

3. If it is concluded that there is evidence of a difference between the mean cholesterol level two days after a heart attack and that four days after a heart attack, obtain a 95% con?dence interval for this difference. Explain in your own words how the con?dence interval should be interpreted.


Related Discussions:- Statistical inference

Intervals, At a tennis tournament a statistician keeps track of every serve...

At a tennis tournament a statistician keeps track of every serve. The statistician reported that the mean serve speed of a particular player was 102 miles per hour (mph) and the st

DATA MINING, please break this problem down to laymen term so that I unders...

please break this problem down to laymen term so that I understand how you arrived at the answer. 1. AllElectronics caries 1000 products, P1, … P1000. Consider customers Ada, Bob,

Projectile, two object are on the same level we release the first one verti...

two object are on the same level we release the first one vertically and the other one with an initial velocity which object will land first?

Correlation and regression problems, CORRELATION & REGRESSION: 1)  What...

CORRELATION & REGRESSION: 1)  What do you mean by the term correlation? 2)  Point out the differences between coefficient of correlation and regression. 3)  If the correl

Collection of information, This methods implies the collection of inform...

This methods implies the collection of information by way of investigator own observation without interviewing the respondents. While the observational methods may be suitabl

Financial statement, opened a business each contributing %60,000 cash to th...

opened a business each contributing %60,000 cash to the company and receiving a capital stock for their investment

Survey statistics, #qa national poll of 1836 respondents indicated that 36%...

#qa national poll of 1836 respondents indicated that 36% support the NDP. Test whether this is sufficient evidence to show that the NDP support has increased since the election. Us

Write Your Message!

Captcha
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