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Question: Assumptions of independence and significance. Wainwright, Leatherdale, and Dublin (2007) evaluated the advantages and disadvantages of using an ANOVA to analyze data with animal models. They explained that animal pups are often raised or clustered together. In terms of the assumptions for an ANOVA, they state, An analysis that is based on individual pups without taking this clustering into account is likely to over-estimate the statistical significance of any observed effect. Similar concerns apply to [within-subjects] analyses, where the errors in an individual over time are likely to be [related], violating statistical assumptions of independence. (Wainwright etal.,2007,p.665) Explain why housing rat pups in clusters might violate the assumption of independence for a within-subjects design.
The standard deviation of the population of completion times is minutes, what is the minimum sample size needed for the managers to be confident that their estimate is within minutes of?
A company buys 100 lightbulbs, each of which has an exponential lifetime of 1000 hours. What is the expected time for the first of these bulbs to burn out?
To be from the same population? You may assume the that follows a normal distribution. values are: 2.13 1.31 1.91 1.92 1.77 1.64 2.29 1.99 2.33 2.49 2.22
Other things remaining the same, which of the given will result in an increase in the p-value?- Increase in sample size.
suppose a car manufacturer believes its windscreen wipers will last on average for three years on their cars if driven
the mean number of animals in a forest of a certain variety is 40 and the standard deviation is 4. a random sample of
Perform the significance test for each correlation and write a summary about food neophobia and the consumption of different types of food.
Describe a method for obtaining a simple random sample of mile-long road segments.- Is this an observational or experimental study?
Strands of human hair absorb elements from the bloodstream and provide a historical record of both health and the use or nonuse of chemical substances. Hair grows at the rate of about one-half inch per month, and a person with long hair might be..
a researcher is studying the weight changes that women go through over the course of pregnancy childbirth and
the wall street journal reported that drug stocks provide a potential for long term growth with over 55% of the adult population of the united states taking perscription drugs daily.
Compare the four data types and discuss their relative strengths and weaknesses. Write a 4-page paper in Microsoft Word format that addresses
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