Determine statistical significance-practical significance

Assignment Help Basic Statistics
Reference no: EM13112264

A statistically significant result occurs when the value of the test statistic falls in the rejection region. A result has practical significance when it is statistically significant and the result also is different enough from results expected under the null hypothesis to be important to the consumer of the results. By taking large enough sample sizes, almost any result can be made statistically significant due to the increased ability of the test to detect a false null hypothesis, but small differences from the conditions expressed by the null hypothesis may not be important, that is, they may not have practical significance. This explains the difference between statistical significance and practical significance. Is this true? Explain your answer.

Reference no: EM13112264

Questions Cloud

Conducting right-tailed hypothesis test : If you were to conduct right-tailed hypothesis test at 5% significance level, you choose the critical value this way. Assuming that the null hypothesis is true
Draw the possible isomers of so3 : What hybrid orbital would be expected for the central atom in each of the following: Draw the molecular structure of these compounds and label Ï? and Ï?bonds.
Create the confidence interval using technology : A t-distribution to create 90% confidence interval for population mean. If convenient, use technology to create the confidence interval.
Which is normally a soluble resident of the er lumen : If you were to remove the ER retrieval signal (KDEL) from protein disulfide isomerase (PDI), which is normally a soluble resident of the ER lumen, where would you expect the modified PDI to be located?
Determine statistical significance-practical significance : A statistically significant result occurs when the value of the test statistic falls in the rejection region. A result has practical significance when it is statistically significant
What is the rate of the reaction : A standard curve of absorbance as a function of oxidized DPIP concentration in ug/ml gives the following equation for the trend line: Y=.5X. The reaction volume was 7ml.
Testing of hypothesis-macburger : The MacBurger restaurant chain claims that the waiting time of customers for service is normally distributed, with a mean of 3 minutes and a standard deviation of 1 minute.
Discussion on bonding theories : What are bonding theories? Why are they important? What may they be used for. HI has a force contents of 314 Nm^-1 and a bond length of 160.92 pm.
Calculate johns maximum daily profit : Calculate John's maximum daily profit and what is John's supply curve? Mathematically represent and then explain.

Reviews

Write a Review

 

Basic Statistics Questions & Answers

  Bound on the error of estimation

The sample mean of the accounts is found to be y-bar = $94.22, and the sample variance is equal to $455.21. Estimate mu and place a bound on the error of estimation.

  Explaining binomial probability distribution

An article in USA Today stated that "Internal surveys paid for by directory assistance providers show that even the most accurate companies give out wrong numbers 15% of the time."

  Provide sufficient evidence of mean

Does the sample provide sufficient evidence that the mean pH level in the water differs from 8.5? Conduct a test at the ? = .01 level. What are the upper and lower limits of the 95% confidence intervals?

  Probability through poisson distribution

Determine the probability that between 5 and 10 minutes will pass between successive occurrences.

  Evidence that treatment decreases surface hardness

Suppose that population variances from both conditions are equal is there evidence that treatment decreases  surface hardness of steel plates?

  Probability value and the significance level

What is the difference between the probability value and the significance level? Please, also provide examples.

  Point estimate for mean and margin of error

Find the 95% confidence interval for the true population mean. Identify the point estimate for mean and margin of error.

  Running and interpreting linear regression

Using your workplace, present or prior, or an organization with which you are affiliated, identify a dependent variable and an independent variable of interest to you

  Proportions of patients reporting pain relief

Is there a significant difference in the proportions of patients reporting pain relief? Run the test at a 5% level of significance.

  Chi-square test for alcohol consumption

At α = 0.10, can the researcher conclude that alcohol consumption is related to sex?  What kind of Chi-Square test is this?

  Number of miles from residence to work

Create a histogram for the following data of the number of miles from residence to place of employment for 30 randomly selected residents of Middletown County.

  Values for mean result in rejection of null hypothesis

If standard deviation is 50 hours and α is equal to 0.01, what values for mean x will result in rejection of null hypothesis.

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