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(a) For Company A, is the increase in the satisfaction score from year 1 to year 2 statistically significant? Use α = 0.05.  (Let μ1 = the satisfaction score for year 2 and μ2 = the satisfaction score for year 1.)

H0: μ1 − μ2 ≤ 0

Ha: μ1 − μ2 > 0

p

75.3α

H0: μ ≤ 75.3

Ha: μ > 75.3

p

(c) For Company B, is the increase from year 1 to year 2 statistically significant? Use α = 0.05. (Let μ1 = the satisfaction score for year 2 and μ2 = the satisfaction score for year 1.)

H0: μ1 − μ2 ≤ 0

Ha: μ1 − μ2 > 0

p

(d) When conducting a hypothesis test with the values given for the standard deviation, sample size, and α, how large must the increase from year 1 to year 2 be for it to be statistically significant? (Round your answer to two decimal places.) = ?

 

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write my assignment 27663

My Question

        Discuss why it is important for nurses to understand the basics of these statistical methods.

  • The key concepts of the chapter: Focus on the basic concepts that are important for nurses to understand as they review research studies.
  • A description of the statistical methods covered in the chapter, what they measure, and under what circumstances they are used. Identify examples of how the statistical methods have been used in research studies.
  • An explanation of the key statistical tests and how they measure significance (if applicable).

To prepare,  read one of the chapters below and follow the instructions for your discussion,

    • Chapter 16, “Descriptive Statistics”

      This chapter introduces descriptive statistics, which, as the name implies, describe characteristics of the data. There is an overview of the different levels of measurement—nominal, ordinal, interval, and ratio—and how they are used. The chapter also defines frequency distributions and distinguishes between univariate and bivariate descriptive statistics.

    • Chapter 17, “Inferential Statistics”

      This chapter focuses on inferential statistics, which are based on the laws of probability. It introduces sampling distributions, estimates of parameters, and levels of significance. In addition, the chapter provides an overview of some of the most commonly used inferential statistical tests, including t-tests, analysis of variance (ANOVA), and chi-square tests. Finally, the process of testing correlations is examined.

    • Chapter 18, “Multivariate Statistics”

      In this chapter, the focus shifts to multivariate statistics. These are often used when the data analysis involves three or more variables. The multivariate tests described include simple linear regression, multiple linear regression, analysis of covariance (ANCOVA), causal modeling, and event history analysis.

    • Chapter 19, “Processes of Quantitative Data Analysis”

      The previous chapters have described a number of different statistical tests used to examine data in a quantitative study; this chapter focuses on how to analyze and interpret the results. It describes the steps in the analysis process and how to determine the credibility of the results.

  • Chapter 24, “Qualitative Data Analysis”

    The focus of this chapter is qualitative data analysis, which is more difficult in some ways than quantitative analysis, because there are not specific tests that can be used. Instead, much of the analysis is based on the researcher’s ability to identify patterns of behavior or similarities in events. Suggestions are provided for analysis of each of the major types of qualitative studies and how to document findings.

 

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write my assignment 13440

1. The Pima Indians of Arizona called themselves “river people” primarily because up until the 1900s, they made their living via agriculture (subsistence farming) alongside the Gila River. Their lifestyle changed, however, with the European invasion and the building of several large dams (namely, the Hoover dam) up river. Why is the prevalence of type 2 diabetes so much higher in the Pima compared with their European counterparts, when they both currently are living similar lifestyles?

2. How much daily energy expenditure would modern day humans need to bring their SER to the optimal level of their hunter-­­gatherer ancestors?? How could this EE be achieved?

3. Explain why an adequate cortisol response is a survival advantage in the short-­­term (think about outrunning a saber-­­tooth tiger), but becomes a disadvantage over the long-­­term (think chronic poverty)?

4. Why should the RER be below approximately 0.85 in the fasted state?

5. Compare and contrast the relative roles of excess energy intake to insufficient energy expenditure in the etiology of obesity in modern society.

6. What societal changes have occurred over the last 30 years that explain the expanding imbalance in energy intake and energy expenditure across the globe today?

 

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write my assignment 27032

Math 1342 Test 21. You are going to pick 1 card from a deck of regular playing cards. Find the probability of getting a Red Card or a Queen2. You are going to pick 1 card from a deck of regular playing cards. Find the probability of getting a Club or Black Card.3. You are going to pick 2 cards from a deck of regular playing cards and you do not replace the card after the first pick. Find the probability of getting a Heart on the first pick and a Red Card on the second pick.4. You are going to pick 2 cards from a deck of regular playing cards and you do not replace the card after the first pick. Find the probability of getting a 5 on the first pick and a 10 on the second pick.5. A Game is to be played where there is a box with 3 – $100 bill, 5- $20 bills, 2- $5.00 bills and 10 – Blank Bills. You reach into the box and pick a bill. What is the probability of not getting a blank bill?6. Assume there are 2 jars with different color balls in them. Jar 1 has 5 red and 5 blue, Jar 2 has 9 red and 1 blue. If you close our eyes and pick a ball at random find the probability of picking a blue ball.Use the following Table for Mail Delivery Delivered to First Class Ads Magazine Home100400300 Business70010002007. Find the probability that the mailed item was First Class or it went to a home.8. Find the probability that the mailed item was an Ad.9. Find the probability that the mailed item went to a home given that it was a magazine.10. At a local clinic there are 10 men, 8 women. If 3 patients are selected at random find the probability that at least one of the patients is a woman.Assume there is a 4 person family and you are looking at the gender of the children. Let therandom variable X stand for number of females in the 4 children in the sample.11. List the Discrete Random Variable Distribution in table format for this situation. Find themean, variance and standard deviation for this distribution.12. A raffle is to be held on a TV that is valued at $3000. A ticket costs $7.00 and 2000 ticketsare sold. Find the expected value, E(X) for this situation.13. A person randomly guesses on a 10 problem True or False test. Find the probability ofgetting exactly 7 questions correct. Use Statcrunch to solve this and paste in your graph andsolution.14. Using the previous problem find the probability of getting less than 8 questions correct. UseStatcrunch to solve this and paste in your graph and solution.15. A person takes a 7 problem test where each question has options a, b, c, and d. Find theprobability of getting 5 or more questions correct. Use Statcrunch to solve this and paste inyour graph and solution.

 

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