Mechanisms of External Motivators on Overall Performance Motivation Sophia Lalani University of Oklahoma Abstract The present study randomly assigned 34 participants to one of four conditions: increased pay‚ decreased pay‚ elimination of pay‚ and the same pay. The participants received two candy bars of their choice for their participation in the study. The participants were administered a math competency task‚ following a bogus evaluation of pay rate based on participant performance on the task
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finished with school‚ I hope to be a Radiologist. A radiologist uses medical imaging technologies to diagnose and sometimes treat diseases. Originally it was the aspect of medical science dealing with the medical use of X-rays emitted by X-ray machines or other such radiation devices for the purpose of obtaining visual information as part of medical imaging. Due to the extensive training radiologists traditionally receive in medical image interpretation‚ radiologists now also direct other imaging technologies
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population parameter σ with the sample statistic s. s Our resulting standard error is SE ( y ) = n Copyright © 2010 Pearson Education‚ Inc. n n Slide 23 - 5 Getting Started (cont.) n n We now have extra variation in our standard error from s‚ the sample standard deviation. n We need to allow for the extra variation so that it does not mess up the margin of error and P-value‚ especially for a small sample. And‚ the shape of the sampling model changes—the model is no longer Normal. So
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complete collection of all measurements or data that are being considered. -Sample: sub collection of members selected from a population. -Census: collection of data from every member of a population. What does Statistics Do? -Collect data -Summarize the dataset collected -Make inferences about the population characteristics from information contained in a sample drawn from the population. -Data must either be numeric in origin or transformed by researchers into numbers. Descriptive
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is a link to the two factors. The U.S is also trying to cut their consumption in half. There is an association between the amount of cigarettes smoked and deaths from CHD. The association has a positive direction. This means as the amount of cigarettes smoked increases‚ so does the deaths from CHD. The association also has a linear from which means the two variables are related. It is also moderately strong. A linear regression is done next. Three conditions are checked to make sure the data is
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students represent all college students (Data source is from UC Davis and can be found in the textbook). a. Is there enough data to calculate a confidence interval for the women? 2. A sample of college students was asked whether they would return the money if they found a wallet on the street. Of the 93 women‚ 84 said “yes‚” and of the 75 men‚ 53 said “yes.” Assume that these students represent all college students (Data source is from UC Davis and can be found in the textbook).
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Population and Sample Our topic is about harmful effects that can affect a student’s performance in school and daily life. Our population of interest would be college students as they are the demographic most subject to many negative influences. Our sample would be stratified because we want to compare the answers of each of the classes: freshman‚ sophomores‚ juniors‚ and seniors. As a result‚ we would be able to see what types of harmful effects each class of students are most concerned about
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The most common value in a distribution e. XXX A single number commonly used to describe the variation in a data distribution f. Xx Data consisting of values that describe the non-numerical categories g. XXX Subset of the population from which data is obtained h. XXX The sum of all values divided by the total number of values i. XXX Neither the participants nor the experimenters know who is in the treatment group or control group j. Xxx The complete set of people or
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1. The mean incubation time of fertilized eggs is 22 days. Suppose the incubation times are approximately normally distributed with a standard deviation of 1 day. (A) The 19th percentile for incubation times is ____ days? (round to the nearest whole number as needed (B) The incubation times that make up the middle 39% are ___ to ___ days? (round to nearest whole number‚ use ascending order) 2. As reported by a recent survey‚ the mean height of females 20 to 29 years old is 63.6 inches. If the
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Sample Final MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Questions 1-4 The following is a set of data from a sample of size n( n=6): 1) Find the mean of the data set A) 15 B) 14 C) 10 D) 13.5 10‚ 17‚ -2‚ 10‚ 23‚ 26. 2) Find the standard deviation of the data set A) 9.33 B) 522.00 C) 104.40 D) 10.22 3) The five-number summary of the data set consists of __________‚ __________‚ __________‚ __________‚ and __________. A) -2‚ 10‚ 13.5‚
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