Ronald Fisher is well known for suggesting that data with p-values of 5% or less should be considered statistically significant. This is now known as the 5% Alpha and is widely used as a cutoff separating statistically significant data from statistically insignificant data. These percentages are probabilities. Explain what the equation α=5%α=5% means using the idea of relative-frequencies.

Ronald Fisher is well known for suggesting that data with p-values of 5% or less should be considered statistically significant. This is now known as the 5% Alpha and is widely used as a cutoff separating statistically significant data from statistically insignificant data. These percentages are probabilities. Explain what the equation α=5%α=5% means using the idea of relative-frequencies.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

B. What is the best predicted temperature for a time when a bug is chirping at the rate of 3000 chirps per minute? The best predicted temperature when a bug is chirping at 3000 chirps per minute is____°F. C. What is wrong with this predicted value? The first variable should have been the dependent variable. It is unrealistically high. The value 3000 is far outside of the range of observed values. It is only an approximation. An unrounded value would be considered accurate. Nothing is wrong with this value. It can be treated as an accurate prediction.
A psychiatrist and psychologist are working together to evaluate the effectiveness of psychotherapy and/or drug therapy for anxiety patients. They have their patients A-H try psychotherapy for month the 1st month, Xanax for the 2nd month, and a combination of psychotherapy/Xanax for the 3rd month. Each month the patients are asked about their anxiety levels to determine which treatment was the most effective. Which of the following tests is appropriate for this study? Correlation Repeated Measures t-test (within subjects) Repeated Measures ANOVA Independent Measures t-test (between subjects)
14.36 Ecological correlation. Many studies reveal a positive correlation between income and number of years of education. To investigate this, a researcher makes two plots. Plot 1: Plot the number of years of education (the explanatory variable) versus the average annual income of all adults having that many years of education (the response variable). Plot 2: Plot the number of years of education (the explanatory variable) versus the individual annual incomes of all adults (the response variable).
An r value of .8 indicates a strong positive correlation. True False
Listed below are amounts (in millions of dollars) collected from parking meters by a security service company and other companies during similar time periods. Do the limited data listed here show evidence stealing by the security service company's employees? Security Service Company: Other Companies: Find the coefficient of variation for each of the two samples, then compare the variation. 1.3 1.8 The coefficient of variation for the amount collected by the security service company is %. (Round to one decimal place as needed:) OA. Yes. There is a significant difference in the variation. OB. No. There is a significant difference in the variation. O C. Yes. There is not a significant difference in the variation. OD. No. There is a not significant difference in the variation. 1.8 1.9 1.6 1.7 1.7 1.7 1.6 1.8 The coefficient of variation for the amount collected by the other companies is %. (Round to one decimal place as needed.) Do the limited data listed here show evidence of stealing by…
P= and C.
Statistics Question
Discuss briefly the following measures of Central Tendency MEDIAN
.A new, miracle diabetes drug that diminishes major symptoms of diabetes has been approved by the FDA. Health care professionals and researchers believe that the new drug will prolong lifespan of diabetes patients. If the population is in steady state and the incidence is constant, what will the effect of this new drug be on the prevalence of diabetes in the population? Explain.
Part 2 Q2: Put (True) or (False). Write True or False for six questions from the following question. Write the reasons for correct answers, and correct any statement/answer if it is false (12 Marks). 1. As the sample size increases, the variance of the estimator decreases.
Q9 The explanatory variable in linear correlation/regression model is recorded on which of thesemeasurement scales: A. categorical B. ordinal C. quantitative D. none of the above
Scenario: Two managers ranked 10 franchises by profitability potential. The sum of squared differences in their rankings is 44. Check to see if their rankings are correlated by calculating the Spearman Coefficient of Rank Correlation. (Enter numerical answers to three decimal places with zero before the decimal. For yes or no answers, enter Y for yes or N for no.) a. Calculated rs _____ b. At alpha =1% and a one-tail test, what is the critical value of rs ______ c. Does this result indicate that the rankings by the managers are positively correlated? _____ (Y or N)