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How would we interpret a statistically significant difference in, say, a study comparing different treatments for depression? How would you contrast the interpretation of statistical significance with effect size?
Researchers at a pharmaceutical company have found that the effective time duration of a safe dosage of a pain relief drug is normally distributed with mean 2 hours and standard deviation 0.3 hour.
consider a steady flow cycle consisting of a pump boiler turbine and condenser with water as the working fluid. the
what size sample will be needed to construct a 95 confidence interval on a ballot issue if the estimate must be plusmn
suppose iq scores were obtained from randomly selected twins. for 20 such pairs of people the linear corelation
Sketch density curves that might explain distributions with fallowing shapes: symmetric, but with two peaks( i.e., two strong clusters of observations)
Standard deviation of the sampling distribution of sample proportion is 0.025. However, the report did not indicate what the sample size n was. What was it?
suppose a birth control pill is 97 effective in preventing pregnancy.a what is the probability that none of 100 women
Based on this information, if department employee selects random sample of n = 9 containers, determine probability that mean volume for sample will be greater than 1.01 gallons?
consider an x-bar chart where the x-bar statistic is normally distributed and an associated x-bar control chart exists.
The accompanying table summarizes randomly selected sample data for San Francisco Defendants in burglary cases.
1. distinguish between classification and tabulation of data. what are the types of classification of data?2. calculate
List the 15 possible samples (without replacement) of two artists that can be selected from the six. for brevity, use the initial provided.
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