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Why is it necessary to debrief research participants? How should this debriefing be conducted when the use of deception has occurred?
In a large group of Americans in 2001-2002, the probability of visiting the emergency room once in the past 12 months was 0.14, and the probability of visiting
For each possible letter grade, find the lowest acceptable score within the established range.- For example, the lowest acceptable score for an A is the score at the 90th percentile of this normal distribution.
An auto manufacturer advertises that "90% of the cars we've ever made are still on the road." Assuming this is literally true, how can it be explained? What facts/statistics would you need to know to expose this misleading claim?
A sample of 20 cigarettes is tested to determine nicotine content and the average value observed was 1.2 mg. Compute a 99 percent two-sided confidence interval for the mean nicotine content of a cigarette if it is known that the standard deviation..
we have all heard of old faithful geyser in yellowstone national park. however there is another less famous old
Larger sample Suppose that the blood cholesterol level of all men aged 20 to 34 follows the Normal distribution with mean m = 188 milligrams per deciliter.
Compute the standardized slopes for SES and English ability; interpret them, and specify what additional information is learned from the standardized slopes that cannot be learned from the unstandardized slopes.
Find the probability of getting at most two wrong numbers.
ANOVA with one observation per treatment (optional). If a two-way layout has just one observation for each treatment, the mean square for error (MSE) is 0 because there is no variation within each treatment group.
Determine the dependent variable(s)? Determine the value of the statistic? Write down the name of one variable not mentioned in this study that one might wish to control for.
Find the probability that a bulb of the brand lasts between 1515 hr and 2010 hr.
The professor obtains a correlation of .40 between these test scores and ratings of student-teaching performance that were provided by the field
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