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1) An understanding of statistics is necessary in any job. The use of statistics can help provide answers to many questions. Please, post a question you think that statistics may help you answer and explain why statistics can help provide an accurate answer?
2) The internet is host to a wealth of information and much of that information comes from raw data that have been collected or observed.Many websites summarize such data using graphical methods discussed in this chapter.
Find a website related to your major (Criminal Justice) that summarizes data and uses graphs, and share it with the class. Let us know how it relates to your major and why it is of interest to you.
3) In one sentence, please write what you understand by the term standard deviation.
4) Imagine yourself at a fair playing one of the midway games. Pick a game and calculate the expected value and post your results along with how you calculated them. For example, you may decide to throw a basketball to try to win a $10 bear. You paid $2.00 for three shots.
What is the expected value? (Please do not use this example in your answer)
In this post, you will be challenged to look at how statistical tests, such as correlation are commonly used and the possible limitations of such analyses. In addition, you will need to identify the appropriate application of course-specified stat..
A CFR system with λ = 0.0004 has been operating for 1000 hr. What is the probability that it will fail in the next 100 hr? The next 1000 hr?
assume that the weight loss for the first month of a diet program varies between 6 pounds and 12 pounds and is spread
Is the Euro fair? Soon after the Euro was introduced as currency in Europe, it was widely reported that someone had spun a Euro coin 250 times and gotten heads 140 times. We wish to test a hypothesis about the fairness of spinning the coin.
It has been estimated that 30% of all farms are family-owned. In a sample of 12 farms, what is the probability that exactly three farms are family owned?
When a production machine is properly calibrated, it requires an average of 25 seconds per unit produced, with a standard deviation of 3 seconds. For a simple random sample of n 5 36 units, the sample mean is found to be }x 5 26.2 seconds per unit..
How large a sample is needed to reduce the margin of error to at most 0.01 (or 1%)? Be conservative by not assuming the sample proportion (obtained from the sample of 500) as the reasonable guess for p. Use the confidence level you found in part (..
For the telephone switch of Example 10.28, we can estimate the expected number of calls in the system, E[M(t)], after T minutes using the time average estimate
at ajax spring water a half-liter bottle of soft drink is supposed to contain a mean of 520 ml. the filling process
With reference to Exercise 12, find the factorial moment-generating function of (a) the Bernoulli distribution and show that μ'(1) = θ and μ'(r) = 0 for r > 1;
a genetic experiment involving peas yielded one sample of offspring consisting of 414 green peas and 153 yellow peas.
An office manager wishes to estimate the mean time required to handle customer complaints. A sample of 38 complaints shows a mean time of 28.7 minutes with a standard deviation of 12 minutes.
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