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What assumption tests should be used? A fifth grade science teacher want to know if there is a relationship between final exam scores and overall course points after adjusting for a quiz score.
Calculate the standard error. With 95% confidence, find out the margin of error?
Construct a 95 percent confidence interval for the true mean.
According to Chebyshev's theorem, proportion of values from data set that is further than 2 standard deviations from the mean is at most?
Using the 0.01 significance level, can we conclude that there is a positive correlation between the variables?
Draw a tree diagram representing the data. What is the probability that a vehicle stolen in this city will never be recovered?
The mean, median, and mode are the most common measures of dispersion (spread).
The mean of a normal probability distribution is 60; the standard deviation is 5.
Calculate chi-square for the cross-tab. Show your work. Is there a statistically significant relationship between these variables?
What is the probability of a fatal accident over a lifetime?
If a worker is chosen at random, what is the probability that he or she.Is very improbable to switch jobs. Is somewhat likely or very likely to switch jobs.
Determine the probability that a randomly selected teacher earns more than $525 per week?
Describe whether the data appear to be approximately normally distrusted by .. a. Comparing data characteristics to theoretical properties.
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