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A graduate student ask 500 female students if they have experienced any sexual harassment on campus. Each student is asked to estimate the frequency of these incidents as either" often," "sometimes," "rarely, " or "never." The researcher also gathers data on age and major to see if there is any connection between these varibales and frequency of sexual harassment.
The reason why we finish our calculation by dividing range by 4 is that in most data sets 95% of the data values fall within two standard deviations of the mean.
The average income of 11 families who reside in a rural area of the Midwest is $60,213, with a standard deviation of $2009. At α =0.05, can it be concluded that the families who live in the cities have a higher income than those who live in the ru..
A computer software developer would like to use the number of downloads (in thousands) for the trial version of his new shareware to predict the amount of revenue
Suppose we have randomly and independently sampled 25 women and asked each whether she has been a victim of domestic abuse at some point in her life. Find the probability that more than 22 of the women sampled have not been the victim of domestic ..
Write a paragraph summarizing the results of the analysis and determine whether the calculated values of chi-square are statistically significant
Describe the sampling distribution of the sample mean.
Suppose that among all participants, the mean test score is 70.07 and the standard deviation is 10.27. Use z-scores to interpret a raw score of 80. What is the corresponding z-score? How would you interpret this result? Show your work.
In the Arnold's Muffler example for the exponential distribution, the average rate of service was given as 3 per hour, and the times were ex-pressed in hours.
Explain the strength of relationship between the assets?
Describe the sampling distribution of the sample proportion
What do confidence intervals represent? What is the most controllable method of increasing the precision of or narrowing the confidence interval
A large retail corporation plans to sample sales receipts of its meat department to estimate the average size (in dollars) of a customer purchase. Previous analysis suggest that the standard deviation of the purchase amount is approximately $50.72..
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