QUESTION 21 The finishing process on new furniture leaves slight blemishes. The table below displays a manager’s probability assessment of the number of blemishes on one piece of new furniture. Number of Blemishes 0 1 2 3 4 5 Probability 0.34 0.25 0.19 0.11 0.07 0.04 1. On average‚ how many blemishes do we expect on one piece of new furniture? 2. What is the variance of blemishes on one piece of new furniture? (round to the nearest hundredth) QUESTION 22 The probability
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Top of Form Question 1 1 / 1 point Despite its widespread availability‚ ________ typically provide(s) the least depth of news coverage. radio television the Internet newspapers magazines Question 2 1 / 1 point Which group has had great popularity on radio talk shows? conservatives liberals socialists communists racial and ethnic minorities Question 3 1 / 1 point Which of the following statements about newspapers is NOT accurate? Newspapers are no longer the primary
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Mitchell Swim Mrs. Miller Period 1 Money Ball Statistics When you think of the word statistics‚ what is the first thing you think of? If this is Mrs. Miller reading this than you are probably thinking about math. However‚ most sports fans would think about baseball. They cannot have a conversation about baseball without mentioning someone’s statistics. The player’s stats tell all about what he has done is his time playing the sport. It can even tell who is better at each category like hitting
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1 Statistics plays a vital role in almost every facet of human life. Describe the functions of Statistics.Explain the applications of statistics. Meaning of statistics Functions of statistics Applications of statistics. Ans:Statistics plays an important role in almost every facet of human life. In business context‚ managers are required to justify decisions on the basis of data. They need statistical models to support these decisions. Statistical skills enable managers to collect‚ analyse and
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CI for pop mean: x±z*(σn) n=(z*σME)2 Reduce ME 1. Lower confidence 2. reduce σ ------------------------------------------------- 3. increase n HT for pop mean ------------------------------------------------- z=x-μσ√n Errors I=P(reject H0/H0 true)=α II=P(accept H0/H0 wrong) Power=1-β Increase pow 1. increase α 2. consider alternative µ that is farther than hypothesized µ 3.increase n ------------------------------------------------- 4.decrease σ One sample t CI x±t*s√n One
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University of Phoenix OnlineCourse: RES / 341QUIZ # 1(Chapter 3 and 4 from Applied Statistics in Business and Economics )45 Questions [Each Question = 1 Point]SOLUTIONPlease mark one answer for all multiple choice questions with RED!Chapter 3Multiple Choice1. Which is not a tip for effective bar charts?A) Time usually goes on the horizontal axis. B) Bar height or length should be proportional to the quantity displayed. C) Label data values at the top of each bar unless graphing lots of data. D)
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Week 4 Exercises Chapter 5 – Section 1. Question 5 To perform a certain type of blood analysis‚ lab technicians must perform two procedures. The first procedure requires either one or two separate steps‚ and the second procedure requires either one‚ two‚ or three steps. a. List the experimental outcomes associated with performing the blood analysis. Answer: There are two procedures that a lab technician must perform. The first procedure requires either one or two separate steps‚ which could be named
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2/8 (Friday) Standard Deviation cont’d Example: Amount of money earned by new immigrants Sample: 12‚ 15‚ 16‚ 20‚ 25‚ 36‚ 40 Step 1: Find the mean * x̄=164/7 * mean is 23.4 Step 2: Find how much each observation deviates from the mean * 12 - 23.4 = -11.4 * 15 – 23.4 = -8.4 * 16 – 23.4 = -7.4 * 20 – 23.4 = -3.4 * 25 – 23.4 = 1.6 * 36 – 23.4 = 12.6 * 40 – 23.4 = 16.6 * Note: all observations below mean will be negative‚ all above will be positive Step
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Step 1- Identify the problem Develop a problem statement- What are you going to investigate (use the 6 characteristics of a good problem statement) 1. Be interested in the problem 2. Have a manageable scope 3. Be comfortable in terms of the knowledge‚ time‚ and resources needed to investigate the problem 4. Be able to collect and analyze numerical data 5. Must be a practical or theoretical reason for you to research the problem 6. It must be ethical for you to investigate the problem
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18. Based on a simple random sample of one hundred an analyst estimates the average hourly wage earned by workers in a city to be $30 and computes the margin of error to be $5. Can we conclude from this that most workers there earn between $25 and $35 per hour? Is the right interpretation for the margin of error? 23. Polls showed the two main candidates in the 2004 presidential election were nearly tied on the day before the election. To predict the winner a newspaper would like to have a poll
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