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A student is interested in whether students who study with music playing devote as much attention to their studies as do students
Describe three experiments that would use the three different t-tests
The probability of Type I error is referred to as the significance level of the test.
A study in The Journal of the American Medical Association describes the effects of diets on weight control.
Find examples in the research that utilize the independent and dependent t-tests that are used to answer a question. Find the t value and its associated p value
Review the SPSS output file (see attachment) which reports the results of the between-group (independent group) one-way ANOVA
Draw the statistics as a histogram. Do they resemble the Normal Distribution?
The average length of time for students to register for classes at a certain college has been 50 minutes. A new registration procedure is being tried.
A psychiatrist hires you to study whether her clients self-disclosed more while sitting in an easy chair or lying down on a couch.
Gender (1=female; 2=male), Age, Height (in meters), Weight, before and after (in kilograms), Cholesterol level, before and after
A hypothesis test is a process that uses population parameters to test a claim about about a sample statistics.
Part of a usability study to assess voting machines measured the time on task (TOT) of voters casting ballots (efficiency)
The Stroop task is when color words are printed in the wrong color; for example, the word red might be printed in the color blue.
Is it harder to get into graduate programs in psychology or history? We randomly selected five institutions from among all U.S. institutions with graduate
At some vacation destinations, "all-inclusive" resorts allow you to pay a flat rate and then eat and drink as much as you want.
On its Web site, the Princeton Review claims that students who have taken its course improve their GRE scores, on average, by 210 points
Scenario: Steven collected data from 20 college students on their emotional responses to classical music. Students listened to two 30-second segments
Suppose that, for a t test, your computed value for t is +3.28. The critical value of t is +2.048. Explain what this means
A researcher is interested in comparing the response times of two different cab companies. Companies A and B were each called at 50 randomly selected times
Downs and Abwender (2002) evaluated soccer players and swimmers to determine whether the routine blows to the head experienced by soccer players
A running coach wanted to see whether runners ran faster after eating spaghetti the night before. A group of six runners was randomly chosen for this study
In studies examining the effect of humour on interpersonal attraction, McGee and Shevlin (2009) found that an individual's sense of humor had a significant
Solar cells are attached to a panel with a new heat resistant adhesive. The adhesive must provide 2.80 pounds of force in order to hold the cell on the panel
Suppose that, in a sample of 200, we observe 140 successes. Is this sufficient evidence at the 1% significance level to indicate the the population proportion
Explain thoroughly, the concept of standard deviation.