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1. the purpose behind constructing a frequency or relative frequency distribution.
2. Explain how to compute the relative frequency and percent frequency for each class if you are given a frequency distribution.
3. Find an example of a pie chart or bar chart in a newspaper or magazine. Copy it, and hand it in with a written analysis of the information conveyed by the chart.
A hospital conducted a study of waiting time in its emergency room. The hospital has a main campus and three satellite locations.Management had a business objective of reducing waiting time for emergency room cases that did not require immediate atte..
The total costs of a proposed project consist of fabrication costs and installation costs. Each cost is uncertain. Fabrication costs Probability Installation costs Probability $MM % $MM % 10 40% 5 25% 20 50% 10 60% 50 10% 30 15% 3.1. Assume that ther..
One conclusion you might reach (hint) after completing the readings for this assignment is that there are no bad designs, only bad design choices (and implementations). State a research question for which a single-group post-test only design ca..
Respond to your peers or the professor and tell the person whether his answer is correct or incorrect and explain why. Indicate the name of the topic and the name of the slice on the Subject line so it is easier for others to follow. Pleas..
1. Assume that the number of miles a particular brand of tire lasts before it needs to be replaced follows a normal distribution with a mean of 45,600 miles and a standard deviation of 5,800 miles. What is the probability that the next tire of this b..
The Environmental Protection Agency (EPA) warns communities when their tap water is contaminated with too much lead. Drinking water is considered unsafe if the mean concentration of lead is 15.5 parts per billion or greater.
8. John Lister (for whom Listerine is named) was a British physician who was pioneer in reducing deaths of surgical patients from infections. He suspected that bacteria were involved in transmitting infection, so he tried using carbolic acid as an op..
The registrar of a large university knows that 30% of the students come to college with credit for an advance placement (AP) course. The registrar is going to conduct interviews with students regarding their experiences at the university. Depending o..
Find the amounts of recycling material at collecting points according to the population or something else? The number of population is about 21, 850 people.
Describe a study you might design that could use the Chi Square statistic. What are the variables? What are the null and alternative hypotheses? Why would the Chi Square test be appropriate for this design? What would the Chi Square statistic indicat..
A box contains 10 items, of which 3 are defective. 2 items are randomly selected, one at a time, with replacement, and x is the number of defective items in the sample. To look up the probability of a defective item being drawn from the box, using a ..
The makers of Compute-All know that in the past, 40% of their sales were from people under 30 years old, 45% of their sales were from people who are between 30 and 50 years old, and 15% of their sales were from people who are over 50 years old...
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