statistics p value mean standard deviation normal distribution and variances

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1. A search aircraft is searching for a smuggler’s diesel submarine on a known route from South America to the US.Based on prior information about smugglers’ habits we expect the submarine to expose its periscope about every half hour to collect electronic and visual information.

a. Given the search aircraft can illuminate a certain operating area with its radar (radar flood) for 45 minutes, what are the chances (assuming this is a Poisson process ) our radar operator will have more than one opportunity to “catch” the periscope raised?Give answer to two decimals places.

b. With 20 minutes left on station, our radar operator just saw a periscope sink moments ago.Assuming the submarine is not aware of our presence, what are the chances that the aircraft will have another opportunity to see the periscope before returning to base?Give answer to two decimals places.

2. Two types of UAVs were launched off of USN ships during a recent deployment.Two out of every three UAVs were made by Manufacturer A and the rest were made by Manufacturer B.If 117 sequential launches were conducted during the deployment with no UAVs lost and the UAV for the next upcoming launch was chosen at random, then what is the approximate probability that at most 72 of these launched UAVs were made by Manufacturer A?Show all work.

3. In an effort to make a leaner Army, the new ground assault vehicle is said, by the manufacturer, to attain 25 miles per gallon on the test range.You doubt the claim and ask for their data.A contractor working on this vehicle provides you with a list of eight test vehicles that together had a mean of 23 miles per gallon and a sample standard deviation of 5 miles per gallon (s = 5).Write an appropriate null and alternative hypothesis, find the test statistic, find the p-value (or give a range), and provide a brief analysis of your findings.Show all work.Include in your analysis your thoughts on the objectivity of the data provided.

4. The mean time to complete work ups for 13 randomly selected aircrew at Squadron A is 230.9 hours with a sample standard deviation of 1.3 hours (s = 1.3) and the mean time to complete work ups for 15 randomly selected aircrew at Squadron B is 227.9 hours with a sample standard deviation of 1.1 hours (s = 1.1).The commander of Squadron A tells the wing this is sufficient evidence to conclude there is no difference in work up time between the two squadrons.Assuming the populations are normally distributed and the variances are equal use the given information to make a case to support or refute the commander’s claim.Show all work

5. In how many ways can six watch-standers be assigned to five different stations on a ship with at least one watch-stander at each station.Since there are six watch-standers to assign, there will be two watchstanders assigned to one of the five stations.Show all work.

 

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Which statement best illustrates that problem solving can create new medical devices? Robert Hooke was in charge of verifying the information that was sent to the Royal academy.

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Which statement best illustrates that problem solving can create new medical devices? Robert Hooke was in charge of verifying the information that was sent to the Royal academy.

Which statement best illustrates that problem solving can create new medical devices? Robert Hooke was in charge of verifying the information that was sent to the Royal academy. William Harvey did exp
Which statement best illustrates that problem solving can create new medical devices? Robert Hooke was in charge of verifying the information that was sent to the Royal academy. William Harvey did experiments with apes to learn about the circulatory system. The stethoscope was invented because the physician did not want to put his head on women’s chests to listen to their heart and lungs. Anton Van Leeuwenhoek was a very curious man and looked at just about everything under this microscope.

 

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minority cultures sociology assignment help

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Compare the Farley text to the Betancourt and Dogra article.  Were you aware of racial and/or ethnic discrimination in this sphere prior to this week’s readings?  If so, how were you made aware? If not, why do you think you were unaware?  To what extent do you think racial and ethnic discrimination within the economic and health care systems is intentional?  If you see it as intentional, why would it be so?  If you view it as unintentional, why do you think it is ongoing?

Farley, J. (2012). Majority-Minority Relations (6th ed.), Upper Saddle River, NJ: Prentice   Hall,   Inc.

 

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exercise b

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This exercise relates to Chapter 4 in your textbook.

For this exercise, you need to watch the Nielsen Media Research Video Case.

To receive credit for this exercise, create a new journal entry and answer the following questions:

  1. Nielsen has sister companies that track Internet activity around the world, box office receipts, and the retail sales of audio and video entertainment products and books. Who are the likely clients of these companies, and how would they use its research?
  2. Much of Nielsen’s research is still reported manually by the subjects of its surveys. Do you think this method provides reliable and unbiased results? Why or why not? Why do you think Nielsen has a policy of prohibiting volunteer participants in its television surveys?
  3. What are some advantages and disadvantages of the newer methods of automated data collection that both Nielsen and Google are exploring? Are there any privacy questions at issue in these new methods? How would a marketing research company deal with them?

 

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