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Discuss the use of standard deviation. Explain how it might be useful to you in your research and how you would explain results using standard deviation. Also, how might it help you in interpreting someone else's research?
Find the value of Proportion and construct a 90% confidence interval for proportion.
At 95% confidence, test to determine if more than 21% of the population will like the new soft drink.
A researcher has a series of Likert-scale items and a measure of frequency of absenteeism. He uses each of the Likert-scaled items in a separate bivariate correlation with absenteeism without testing for the assumptions of linear relationships. Is th..
Identify at least 2 variables for which you would utilize a repeated-measures ANOVA in your analysis. Describe the variables and their scale of measurement.
According to an IRS study, it takes an average of 330 minutes for taxpayers to prepare, copy, and electronically file a 1040 tax form. A consumer watchdog agency selects a random sample of 40 taxpayers and finds the standard deviation of the time ..
Calculate the mean, median, range, and standard deviation for the Body Fat Versus Weight data set. Report your findings, and interpret the meanings of each measurement.
In your opinion does one do a better job or representing the proportion of the area under the standard curve?
Perception of Time- Randomly selected statistics students of the author participated in and experiment to test their ability to determine when 1 min(or 60 seconds) has passed.
For two samples from what are assumed to be normally distributed populations, the sample size and standard deviations are n1 = 10, s1 = 23.5, n2 =9 and s2=10.4.
How variable is the number of service calls with which Sam's department must deal?
The mean height of a certain plant is 160 centimeters. Suppose a botanist wants to carry out a hypothesis test to see if the mean height when these plants are treated with a certain chemical differs from 160. What is the null hypothesis and the al..
If W denotes the total number of spaces one moves under these special conditions, find the mean and standard deviation of W.
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