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The incarceration rate in one nation's prisons was 965 per 100,000 male residents, and 65 per 100,000 female residents.
a. Find the relative risk of being incarcerated, comparing males to females. Interpret.
b. Find the difference of proportions of being incarcerated. Interpret.
c. Which measure do you think is more appropriate for these data? Why?
The 99% confidence interval estimating the proportion of all students at the university who prefer outdoor exercise is given by which of the following?
Salary information for a random sample of male and female employees of a large company is shown below.
Illustrate that probability distribution of X satisfies properties of a discrete probability distribution.
Illustrate is the range of values for a coefficient of correlation. Illustrate degree of relationship do values of the correlation coefficient (r)with magnitudes close to 1.00 indicate.
If the mean lifetime of this type of component is 100 hours and its standard deviation is 19 hours, how many of these component must be in stock so that the probability of the system is in continual operations for the next 2,000 hours is at least ..
You are the production manager of a company. Parachutes are woven in your factory using a synthetic fiber purchased from one of four different suppliers. The most important outcome for parachutes is strength of the fabric.
This activity is a revision of an activity found in Real Data: A Statistics Workbook Based on Empirical Data by Z. C Holcomb (1997). Published by Pyrczak Publishing.
At the .05 level of significance, is there convincing evidence that the number of absences per employee has increased?
Suppose the horses in a large stable have a mean weight of 1464 lbs, and a standard deviation of 111. What is the probability that the mean weight of the sample horses would differ from the population mean by less than 11 lbs if 34 horses are samp..
Rhode Island Red Chickens the incubation time for Rhode Island Red chicks is normally distributed to find out the number of chicks we expect that will hatch.
Evaluate the significance of the hypothesis that the randomized algorithm has a lower average runtime than the known comparison algorithm. As before, explain and list your calculations, test choices, and conclusion drawn.
Use normal approximation to determine probability that x = 2. Illustrate all work.
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