what is a bootstrap in statistics? How do we get p-values and confidence intervals using bootstrapping?

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orchestra answered 1 year ago

MIS445- Discussion Topic: Confidence intervals and p-values are commonly used in business decision making. Using the...

MIS445- Discussion Topic: Confidence intervals and p-values are commonly used in business decision making. Using the CSU-Global Library, identify at least two business journals (or articles) that have used confidence intervals and/or p-values. For each journal (or article), describe: the problem statement the parameter(s) of interest the conclusion and/or decision. In addition, state the sample size. If they are using a confidence interval, state the confidence level and margin of error. If they are using the p-value, state the hypotheses,...

In polynomial regression, what assumptions underlie the (strict) validity of the various p-values and confidence intervals?

we have been using and use the P-VALUE METHOD to make your decision. For confidence intervals,...

we have been using and use the P-VALUE METHOD to make your decision. For confidence intervals, there are not specific steps, but there is a specific Excel tool for each interval. They should not be done by-hand for this set, nor should you simply use Excel formulas to use it as a calculator. Treat each question as a separate problem -- we use the same data set but are answering different “research questions”. Many parts of cars are mechanically tested...

For the following questions you will use StatKey to construct bootstrap confidence intervals for the difference...

For the following questions you will use StatKey to construct bootstrap confidence intervals for the difference in two means. Use the “Home Prices (NY vs NJ)” dataset built into StatKey to address the following. A. Using the percentile method, construct a 95% confidence interval for the difference in the mean home prices in New York and New Jersey. Take at least 5,000 resamples. Don’t forget to include a screenshot from StatKey and to identify your answer. B. Using the standard...

What is the difference between Confidence Intervals and P-value?

How do confidence intervals differ from prediction intervals? How are these two intervals affected by the...

How do confidence intervals differ from prediction intervals? How are these two intervals affected by the distance value?

P- values and confidence intervals are both used in hypothesis testing. explain three reasons why it...

P- values and confidence intervals are both used in hypothesis testing. explain three reasons why it may be preferable to report a confidence interval over a P-value. Provide a specific example to justify the reasons.

find a research article that reports the results using confidence intervals or coefficient values. Discuss the...

find a research article that reports the results using confidence intervals or coefficient values. Discuss the importance of the confidence intervals or coefficient values for proving or disproving the hypotheses. Attach the pdf of the article to your discussion pos

For finding p-values, there are two approaches - bootstrap or use a distribution for the test...

For finding p-values, there are two approaches - bootstrap or use a distribution for the test statistic under the null hypothesis (like standard normal, T, Chi-Square, F). Using the distribution approach requires some assumptions (such as normality, or approximate normality, of the population distribution, large sample sizes, etc.) For the following testing scenarios, write down the assumptions that are needed: a. Testing of equality of proportions between two categorical variables - p1 and p2. Ho: p1 = p2 vs H1:...

This quiz covers the first half of Section 7.1 (constructing confidence intervals using t statistics) and...

This quiz covers the first half of Section 7.1 (constructing confidence intervals using t statistics) and is due at 9:00 PM on Thursday, April 2. You will have two attempts at this quiz. I suggest you do all of them first on paper. After the first attempt, you should write down which ones you answered correctly and which one incorrectly, as well as any hints that were given. Then re-solve the problems and take the quiz a second time. Note...

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