You conducted a t-test you found a statistically

Assignment Help Basic Statistics
Reference no: EM13642649

Question 1) You wish to conduct an ANOVA (one way/omnibus). In order to insure you have enough power to detect differences in your sample, you need to run a power analysis in G*Power. Assume that you are expecting a medium effect size, α = 0.05, and a minimum power of 0.80. Your experiment utilizes three (3) groups. What is the required sample size (a priori)? How many data points should exist in each group?

Question 2) You conducted a Chi-Square Goodness of Fit Test. Unfortunately, you did not get the sample size you had hoped for during your research. You were able to get 55 in the sample. Calculate your actual power (post hoc). You did a 2 X 2 table. Assume you had a medium effect size.

Question 3) You conducted a t-test. You found a statistically significant difference between your groups even though your sample size was relatively small. Upon conducting a post hoc power analysis you found that your actual power was 0.65. What should you do? Is there a problem with having a power less than 0.80 when you have significant differences?

Question 4) You conducted a t-test. You did not find a statistically significant difference between your groups even though your sample size was relatively small. Upon conducting a post hoc power analysis you found that your actual power was 0.57. What should you do? Is there a problem with having a power less than 0.80 when you do not have significant differences?

Reference no: EM13642649

Questions Cloud

Sunitas job is to provide technical support to computer : sunitas job is to provide technical support to computer users. suppose the arrival of calls can be modeled by a poisson
The glass core of an optical fiber has an index of : the glass core of an optical fiber has an index of refraction 1.61. the index of refraction of the cladding is 1.47.
Neglecting frictional forces on the trailer determine the : a 940 kg car is pulling a 305 kg trailer. together the car and trailer have an acceleration of 2.20 ms2 in the forward
What is the maximum request rate that you can handle if you : you write a new app that can take a picture of someone and automatically draw a funny mustache on them. it takes 3
You conducted a t-test you found a statistically : question 1 you wish to conduct an anova one wayomnibus. in order to insure you have enough power to detect differences
A system is devised to exert a constant force of 8 n on an : a system is devised to exert a constant force of 8 n on an 80-kg body of mass initially at rest. the force pushes the
The number of bank robberies that occur in a large north : the number of bank robberies that occur in a large north american city is poisson distributed with a mean of 1.8 per
A spelunker enters a cave consider the entrance to the cave : a spelunker enters a cave. consider the entrance to the cave the origin. the spelunker then moves east for 100 ft then
What is the magnitude of the potential difference deltav : a spherical capacitor is formed from two concentric spherical conducting shells separated by vacuum. the inner sphere

Reviews

Write a Review

Basic Statistics Questions & Answers

  Statistics-probability assignment

MATH1550H: Assignment:  Question:  A word is selected at random from the following poem of Persian poet and mathematician Omar Khayyam (1048-1131), translated by English poet Edward Fitzgerald (1808-1883). Find the expected value of the length of th..

  What is the least number

MATH1550H: Assignment:  Question:     what is the least number of applicants that should be interviewed so as to have at least 50% chance of finding one such secretary?

  Determine the value of k

MATH1550H: Assignment:  Question:     Experience shows that X, the number of customers entering a post office during any period of time t, is a random variable the probability mass function of which is of the form

  What is the probability

MATH1550H: Assignment:Questions: (Genetics) What is the probability that at most two of the offspring are aa?

  Binomial distributions

MATH1550H: Assignment:  Questions:  Let’s assume the department of Mathematics of Trent University has 11 faculty members. For i = 0; 1; 2; 3; find pi, the probability that i of them were born on Canada Day using the binomial distributions.

  Caselet on mcdonald’s vs. burger king - waiting time

Caselet on McDonald’s vs. Burger King - Waiting time

  Generate descriptive statistics

Generate descriptive statistics. Create a stem-and-leaf plot of the data and box plot of the data.

  Sampling variability and standard error

Problems on Sampling Variability and Standard Error and Confidence Intervals

  Estimate the population mean

Estimate the population mean

  Conduct a marketing experiment

Conduct a marketing experiment in which students are to taste one of two different brands of soft drink

  Find out the probability

Find out the probability

  Linear programming models

LINEAR PROGRAMMING MODELS

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