Internal validity of a study and recommendations

Assignment Help Basic Statistics
Reference no: EM131361503

What are some of the concerns relating to the internal validity of a study and recommendations to strengthen it? How will the other 3 types of validity help? What are the dangers of failing to consider the validity of a research study?

Reference no: EM131361503

Questions Cloud

Assess your own family''s culture and socioeconomic status : Assess your own family's culture, race, ethnicity, and socioeconomic status. How have these family characteristics had an impact on family functioning?
Why can''t this special-case algorithm be generalized : Does the problem become easier to solve when I set some of the input parameters to trivial values, such as 0 or 1?
Difference between quantitative and mixed methods : Describe the difference between quantitative and mixed methods, what are the general advantages and disadvantages of the two research approaches featured in the articles.
Prepare for heaven ltd the statement of financial position : Prepare, for Heaven Ltd, the statement of financial position, statement of changes in equity and notes thereto at 30 June 2016 in accordance with the requirements of AASB 101.
Internal validity of a study and recommendations : What are some of the concerns relating to the internal validity of a study and recommendations to strengthen it? How will the other 3 types of validity help? What are the dangers of failing to consider the validity of a research study?
Does this suggest a divide-and-conquer algorithm : Does my problem seem something like satisfiability, the traveling salesman problem, or some other NP-complete problem? Might the problem be NP-complete and thus not have an efficient algorithm? Is it in the problem list in the back of Garey and Jo..
Empirical rule to estimate the number of farms : Use the empirical rule to estimate the number of farms whose land and building values per acre are between $1100 and $1700.
Approximate percentage of the men : Heights of men on a baseball team have a bell-shaped distribution with a mean of 181 cm181 cm and a standard deviation of 8 cm8 cm. Using the empirical rule, what is the approximate percentage of the men between the following values?
Mean and standard deviation of the team times : a) What are the mean and standard deviation of the team times? b) Suppose that the teams best time to date is 9.9 minutes. What is the probability that the team beats its own best time?

Reviews

Write a Review

Basic Statistics Questions & Answers

  Determine autocorrelation function for the random process

A binary phase shift keying signal is defined. - Determine the autocorrelation function for the random process.  - Is the process WSS?. - Determine the PSD.

  Develop a joint probability

Develop a probability tree showing all marginal, conditional, and joint probabilities and develop a joint probability table.

  The number of automobiles that arrive at a certain

the number of automobiles that arrive at a certain intersection per minute has a poisson distribution with a mean of 5.

  Joint probability problem-mutually independent distributions

The probability of Toyota building a new production plant is 70% and the probability of GM building a new one is 50%. The following are the probabilities associated with the countries Toyota would build a new plant:

  Find proportion of americans who favor tougher gun control

What sample size is needed to estimate the proportion of Americans who favor tougher gun control with 95% confidence and maximum error of 3%. Assume past studies indicted that the proportion is around 40%.

  Find the standard error of the sample proportions

For a random sample of 200 undergraduates he finds that 70 have some kind of allergy. What is the standard error of the sample proportions?

  Find test statistic-degrees of freedom and the p-value

State appropriate null and alternative hypotheses. Report the test statistic, its degrees of freedom, and the P-value. What do you conclude?

  Estimating simple linear regression equation

A sample of twenty automobiles was taken, and the miles per gallon (MPG), horsepower, and total weight were recorded. Develop a linear regression model to predict MPG using horsepower as the only independent variable.  Develop another model with weig..

  Find the corresponding probability mass function.

Show that F(x) is a distribution function of a discrete random variable.

  Empirical rule to estimate the number of farms

Use the empirical rule to estimate the number of farms whose land and building values per acre are between $1100 and $1700.

  Suppose that 2224 of all vehicles on the road get a fuel

suppose that 22.24 of all vehicles on the road get a fuel economy of at least 35 miles per gallon mpg. you conduct an

  How many condition are there in simplest possible experiment

Describe how participants are assigned to conditions in randomized groups, matched-subjects, and repeated measures experimental designs.

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