what kinds of substances diffuse most readily through a cell membrane

what kinds of substances diffuse most readily through a cell membrane
 

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math hw

due soon

 

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Statistics Help- Please see attachment

 

1. True or False. Justify for full credit. (25 pts)

 

(a) The normal distribution curve is always symmetric to its mean.

 

 

 

(b) If the variance from a data set is zero, then all the observations in this data set are identical.

 

(c) . of complement the is where, 1) AND(AA A APc c

 

(d) In a hypothesis testing, if the p-value is less than the significance level α, we do not have sufficient evidence to reject the null hypothesis.

 

(e) The volume of milk in a jug of milk is 128 oz. The value 128 is from a discrete data set.

 

 

 

Refer to the following frequency distribution for Questions 2, 3, 4, and 5. Show all work. Just the answer, without supporting work, will receive no credit.

 

 

 

A random sample of 25 customers was chosen in UMUC MiniMart between 3:00 and 4:00 PM on a Friday afternoon. The frequency distribution below shows the distribution for checkout time (in minutes).

 

 

2. Complete the frequency table with frequency and relative frequency.

 

3. What percentage of the checkout times was less than 3 minutes?

 

4. In what class interval must the median lie? Explain your answer.

 

5. Assume that the largest observation in this dataset is 5.8. Suppose this observation were incorrectly recorded as 8.5 instead of 5.8. Will the mean increase, decrease, or remain the same? Will the median increase, decrease or remain the same? Why?

 

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6. A random sample of STAT200 weekly study times in hours is as follows:

 

2 15 15 18 30

 

Find the sample standard deviation. (Round the answer to two decimal places. Show all work. Just the answer, without supporting work, will receive no credit.)

 

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Refer to the following information for Questions 7, 8, and 9. Show all work. Just the answer, without supporting work, will receive no credit.

 

A fair coin is tossed 4 times.

 

7. How many outcomes are there in the sample space? (5 pts)

 

8. What is the probability that the third toss is heads, given that the first toss is heads? (10 pts)

 

9. Let A be the event that the first toss is heads, and B be the event that the third toss is heads. Are A and B independent? Why or why not?

 

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Refer to the following situation for Questions 10, 11, and 12.

 

The boxplots below show the real estate values of single family homes in two neighboring cities,

 

in thousands of dollars.

 

For each question, give your answer as one of the following: (a) Tinytown; (b) BigBurg; (c) Both cities have the same value requested; (d) It is impossible to tell using only the given information. Then explain your answer in each case.   

 

10. Which city has greater variability in real estate values?

 

11. Which city has the greater percentage of households with values $85,000 and over?

 

12. Which city has a greater percentage of homes with real estate values between $55,000 and $85,000?

 

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Refer to the following information for Questions 13 and 14. Show all work. Just the answer, without supporting work, will receive no credit.

 

There are 1000 juniors in a college. Among the 1000 juniors, 200 students are taking STAT200, and 100 students are taking PSYC300. There are 50 students taking both courses.

 

13. What is the probability that a randomly selected junior is taking at least one of these two courses? (10 pts)

 

14. What is the probability that a randomly selected junior is taking PSYC300, given that he/she is taking STAT200?

 

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15. UMUC Stat Club is sending a delegate of 2 members to attend the 2015 Joint Statistical Meeting in Seattle. There are 10 qualified candidates. How many different ways can the delegate be selected?

 

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16. Imagine you are in a game show. There are 4 prizes hidden on a game board with 10 spaces. One prize is worth $100, another is worth $50, and two are worth $10. You have to pay $20 to the host if your choice is not correct. Let the random variable x be the winning. Show all work. Just the answer, without supporting work, will receive no credit.

 

(a) What is your expected winning in this game? (5 pts)

 

(b) Determine the standard deviation of x. (Round the answer to two decimal places) (10 pts)

 

 

 

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17. Mimi just started her tennis class three weeks ago. On average, she is able to return 20% of her opponent’s serves. Assume her opponent serves 8 times. Show all work. Just the answer, without supporting work, will receive no credit.

 

 

 

(a) Let X be the number of returns that Mimi gets. As we know, the distribution of X is a binomial probability distribution. What is the number of trials (n), probability of successes (p) and probability of failures (q), respectively? (5 pts)

 

(b) Find the probability that that she returns at least 1 of the 8 serves from her opponent. (10 pts)

 

(c) How many serves can she expect to return? (5 pts)

 

 

 

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Refer to the following information for Questions 18, 19, and 20. Show all work. Just the answer, without supporting work, will receive no credit.

 

The IQ scores are normally distributed with a mean of 100 and a standard deviation of 15.

 

18. What is the probability that a randomly selected person has an IQ between 85 and 115? (10 pts)

 

19. Find the 90th percentile of the IQ distribution. (5 pts)

 

20. If a random sample of 100 people is selected, what is the standard deviation of the sample mean?

 

(5 pts)

 

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21. A random sample of 100 light bulbs has a mean lifetime of 3000 hours. Assume that the population standard deviation of the lifetime is 500 hours. Construct a 95% confidence interval estimate of the mean lifetime. Show all work. Just the answer, without supporting work, will receive no credit.

 

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22. Consider the hypothesis test given by

 

5.0: 5 .0: 10 pH p H

 

In a random sample of 225 subjects, the sample proportion is found to be . 51.0ˆ p

 

(a) Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit.

 

(b) Determine the p-value for this test. Show all work; writing the correct P-value, without supporting work, will receive no credit.

 

(c) Is there sufficient evidence to justify the rejection of at the level? Explain. 0 H 0.01

 

 

 

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23. A new prep class was designed to improve AP statistics test scores. Five students were selected at random. The numbers of correct answers on two practice exams were recorded; one before the class and one after. The data recorded in the table below. We want to test if the numbers of correct answers, on average, are higher after the class.

 

 

Is there evidence to suggest that the mean number of correct answers after the class exceeds the mean number of correct answers before the class?

 

Assume we want to use a 0.01 significance level to test the claim.

 

(a) Identify the null hypothesis and the alternative hypothesis.

 

(b) Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit.

 

(c) Determine the p-value. Show all work; writing the correct critical value, without supporting work, will receive no credit.

 

(d) Is there sufficient evidence to support the claim that the mean number of correct answers after the class exceeds the mean number of correct answers before the class? Justify your conclusion.

 

 

 

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24. A random sample of 4 professional athletes produced the following data where x is the number of endorsements the player has and y is the amount of money made (in millions of dollars).

 

 

 

 

(a) Find an equation of the least squares regression line. Show all work; writing the correct equation, without supporting work, will receive no credit. (15 pts)

 

(b) Based on the equation from part (a), what is the predicted value of y if x = 4? Show all work and justify your answer.

 

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25. Randomly selected nonfatal occupational injuries and illnesses are categorized according to the day of the week that they first occurred, and the results are listed below. Use a 0.05 significance level to test the claim that such injuries and illnesses occur with equal frequency on the different days of the week. Show all work and justify your answer.

 

 

 

 

(a) Identify the null hypothesis and the alternative hypothesis.

 

(b) Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit.

 

(c) Determine the p-value. Show all work; writing the correct critical value, without supporting work, will receive no credit.

 

(d) Is there sufficient evidence to support the claim that such injuries and illnesses occur with equal frequency on the different days of the week? Justify your answer.

 

 

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DQ 5

Interoperability

  • Elaborate on the trend of interoperability of health care management information systems. Determine a significant challenge that health care organizations will face when creating an interoperable system. Justify your response.
  • Suggest a significant benefit of interoperability that is the result of the SAPHIRE project. Provide support for your rationale.

 

 

 

Solutions to HMIS Issues

 

  • Determine the most significant requirement of an effective solution to interoperability. Provide a rationale for your determination.
  • Suggest a significant challenge of applying WSIHS to health care management information systems (HMIS), and indicate how the challenge may be mitigated.
 

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Can anyone help me with my homework?

In Module 4, you were introduced to the concept of exponential functions that can be used to model growth and decay. In this exercise, you will use a Microsoft Excel spreadsheet to calculate the exponential growth of a population of your choosing.

Click here to open the Microsoft Excel spreadsheet that you will use to perform the calculations for this assignment.

In the spreadsheet, perform the following operations:

  1. Input a population value into the box next to Initial Population on the spreadsheet. This population should be anything such as the people, animals, microorganisms, or plants.
  2. Input a rate of growth for your population into the box next to Rate 1. Since we are interested in a positive annual percent growth rate per year, this number should be greater than zero percent. Be sure to input this number in the form of a decimal.
  3. Repeat the above procedure for Rate 2 and Rate 3. Make sure that the values you select differ by two percent. For example, the values 0.01, 0.03, and 0.05 would be good choices.
  4. Under the Time (years) column, input three different year values. Make sure that your values increase by a minimum of two years. For example, 3, 5, 7 years would be good choices.
  5. When you input all of your data, you’ll see that the spreadsheet has performed the calculations for the future size of each population, rate of growth, and time interval. Additionally, this information will be presented graphically in the chart.

Now that you’ve completed your analysis, it is now time to report the results and examine your findings.

In a Microsoft Word document, respond to the following:

  1. Calculate what the future size of the population will be, given a specific initial population, rate of growth, and time interval.

Use the exponential equation: Future value = Present value * exp(rt)

    • exp is the base “e”
    • r = annual rate of growth expressed as a percent
    • t = years

Note: The spreadsheet performed these calculations for you, so you can check the answer you obtain with those in the spreadsheet. In order to perform this calculation, you’ll need to have access to a scientific calculator that will have an ex button in order to perform the exp(rt) calculation. There are a number of free scientific calculators available over the Internet. Additionally, all smartphones have calculator apps that have a scientific mode. Check with your instructor for a list of currently available free options if you do not own a scientific calculator.

  1. Repeat the calculation for at least two other values of t; make sure they are at least two years apart from one another. Use the same values you input into the spreadsheet and compare the answers you obtain to those that appear in the spreadsheet.
  1. Repeat the calculations using two more selections of population growth rate; ensure that each population growth rate is at least two percent different than the others. Use the same values you input into the spreadsheet and compare the answers you obtain to those that appear in the spreadsheet.
  1. Examine the graph that your spreadsheet produced based upon the calculations. Did this graph consist of straight lines or curved lines? Describe the shape of these lines for each growth rate. How did they differ? Why?
  2. Explain the implications of growth rate for your population. What do you think will happen over a long period of time if a given population of organisms is allowed to increase without limits? Are there environmental factors that keep populations from growing exponentially unchecked? What would be the impact on environmental resources?
  3. Explain the likelihood of your results. Would it be expected that the percent growth rate would stay constant over long periods? Is exponential growth an appropriate assumption for long periods? If not, what other changes in population size might be expected?

For this assignment, you will submit a spreadsheet and a report. The spreadsheet will be the Microsoft Excel file containing your analysis. Name your Microsoft Excel file as follows: LastnameFirstInitial_M5_A1.xls.

 

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Global organization

 

 

 

 

Option 1: Cross-Cultural Perspectives

 

 

 

Research a global organization and a cultural issue that affects this organization’s interactions outside the United States.

 

 

 

Define the cultural issue within the global organization.

 

 

 

Prepare an analysis of the ethical and social responsibility issues that your selected organization must deal with as result of being a global organization.

 

 

 

Write a 1,050- to 1,400-word paper summarizing the results of the analysis. Include the following:

 

 

 

·         Identify ethical perspectives in the global organization.

 

·         Compare these ethical perspectives across cultures involved in the global organization.

 

 

 

Format your paper consistent with APA guidelines.

 

 

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How soon can you have it finished?

 

In this LASA assignment, you will create a proposal describing specific outcomes that a public health institution should be held accountable for: set targets, goals, objectives, strategies, and applicable performance measures for monitoring the progress in each specified outcome area.

 

Directions:

  1. Identify 3–5 specific outcomes that a public health institution should be responsible for.
  2. Set targets, goals, and objectives associated with each outcome.
  3. Discuss the strategies you would use for monitoring the progress in each specified outcome area.
  4. Develop performance measures for monitoring progress toward meeting the targets, goals, and objectives.
  5. Develop strategies for implementing the performance measures.

Your final product will be a Word document and be approximately 6–8 pages in length. Utilize at least 2–3 scholarly sources in your research. Your document should be written in a clear, concise, and organized manner; demonstrate ethical scholarship in accurate representation and attribution of sources; and display accurate spelling, grammar, punctuation, and references page.

 

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English homework

 

Exam 986098: The Writing Process, Part 2

 

Write a composition describing a memorable day in your life. Your composition needs to be three to five paragraphs long. It must contain an introduction, a body, and a conclusion.  [750 words]

 

 

 

 

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Industrial Organization Paper – on Child Care Services NAICS 624000

Industrial Organization Paper – Child Care Services NAICS 624000

 

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