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A researcher measured the same group of people's physiological reactions while watching horror films and compared them to when watching comedy films, and a documentary about wildlife. The resulting data were normally distributed. What test should be used to analyze the data?
Independent analysis of variance (my choice); Repeated measures analysis of variance, Kruskal-Wallis test, or Friendman;s ANOVA (not a normal distribution, so I ruled this out).
"Suppose that we conducted a survey in which we asked 800 people the following question: "In the event of an emergency, would you seek medical assistance at the emergency room of our hospital?"
a. Calculate the variance and standard deviation for this data. b. Determine a confidence interval of 95% to estimate the population variance of the rent a car
You are playing a children s game in which the number of spaces you get to move is determined by the rolling of a die. You must land exactly on the final space in order to win. If you are 10 spaces away, how many turns might it take you to win?
Five have a 3/10,000 chance for failure. Four have a 4/10,000 chance for failure. One componet has a 1/100 chance for failur. What is the overall reliability of the product?
The maximum temperature reached on any day can be classified as above freezing (a success) or below freezing (a failure).
Surface defects have been counted on 25 rectangular steel plates, and the data are shown below. Set up a control chart. Does the process producing the plates appear to be in statistical control?
This result applies no matter what the shape of the probability distribution from which the samples are taken. Central Limit Theorem: How Large a Sample?
Measures of Central Tendency
the distrubution with parameter thetacedil has pdf fy theta1thetae-ytheta where 0ltxltinfinity and thetagt0.find1. the
in 1988 the mean expenses for college were 8000 with a standard deviation of 800. if 40 students were selected at
A weight-loss company wants to statistically prove that its methods work. They randomly selected 10 clients who had been on the weight loss program for between 55 and 65 days. They looked at their beginning weights and their current weight. The st..
Johnson, Koch, Fallow, and Huwe (2000) conducted a study of mentoring in two types of psychology doctoral programs: experimental and clinical.
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