We have administered an anxiety test to all members of the
We have administered an anxiety test to all members of the class. The mean anxiety score is 71 and the standard deviation is 9. (higher score=higher anxiety)
What percentage of people scored over 86 on the anxiety test?
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A sample of size n = 14 is selected from a normal population to construct a 95% confidence interval estimate for a population mean. The interval was computed to be (7.82 to 9.64). Determine the sample standard deviation.
What statistical tests can perform to compare two groups asked the same question, when the question has a yes/no answer and the sample groups are different.
A sample of households that subscribe to the United Bell Phone Company revealed the following numbers of calls received by each household last week. Determine the mean, median, and standard deviation of the number of calls received.
The spring balance is reasonably accurate for determining the load mass, Explain how to use the Workin = Workout principle to verify the mass of the spring balance
With a mean of 300 and a standard deviation of 80, how high a score do you need to be in the top 30%?
What is the relationship between the sign of the correlation coefficient and the sign of the slope of the regression line?
A 43.0-kg child swings in a swing supported by two chains, each 2.92 m long. The tension in each chain at the lowest point is 346 N. Find the child's speed at the lowest point
If I know the T-score for those who made an A on a test is 60, the z-score for those that made a B is .5, the number of students total is 200,
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