X|-BECourse HeroX CA well-known brokerage firm exe x→ C blackboard.forsythtech.edu/ultra/courses/39150_1/cl/outline[MAT-152-812K 20235U] Statistical Methods IUnit 5 (8.2, 8.3, 7.2)Unit 7 Section 7.2: Hypothesis TestingMany investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a goodbarometer of the overall stock market. On January 31, 2006, 9 of the 30 stocks making up the DJIAincreased in price (The Wall Street Journal, February 1, 2006). On the basis of this fact, a financial analystclaims we can assume that 30% of the stocks traded on the New York Stock Exchange (NYSE) went up thesame day.A sample of 55 stocks traded on the NYSE that day showed that 15 went up.You are conducting a study to see if the proportion of stocks that went up is significantly less than 0.3. Youuse a significance level of a 0.01.What is the test statistic for this sample? (Report answer accurate to three decimal places.)test statistic=ContentWhat is the p-value for this sample? (Report answer accurate to four decimal places.)p-value=The p-value is...O less than (or equal to) aOgreater than aThis test statistic leads to a decision to...Oreject the nullaccept the nullfail to reject the nullX +ke ruch the final cantorian isA Course HeroP@blackboard.forsythtech.edu/ultra/courses/ 39150_1/cl/outline[MAT-152-812K 2023SUJ Statistical Methods IUnit 5 (8.2, 8.3, 7.2)The p-value is...O less than (or equal to) aO greater than aThis test statistic leads to a decision to...O reject the nullO accept the nullO fail to reject the nullAs such, the final conclusion is that...O There is sufficient evidence to warrant rejection of the claim that the proportion of stocks that wentup is less than 0.3.Unit 7 Section 7.2: Hypothesis Testing feThere is not sufficient evidence to warrant rejection of the claim that the proportion of stocks thatwent up is less than 0.3.O The sample data support the claim that the proportion of stocks that went up is less than 0.3.O There is not sufficient sample evidence to support the claim that the proportion of stocks that wentup is less than 0.3.Question Help: Message instructorSubmit QuestionO0MEacerA

sample size(n)=55x=15significance level()=0.01sample proportion()=

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The economic dynamism, which is the index of productive growth (in dollars) for countries that are designated by the World Bank as middle-income are in following table ("SOCR data 2008," 2013): Table: Economic Dynamism ($) of Middle Income Countries 25.8057 37.4511 51.915 43.6952 47.8506 43.7178 58.0767 41.1648 38.0793 37.7251 39.6553 42.0265 48.6159 43.8555 49.1361 61.9281 41.9543 44.9346 46.0521 48.3652 43.6252 50.9866 59.1724 39.6282 33.6074 21.6643 Compute a 95% confidence interval for the mean economic dynamism of middle-income countries by answering the following questions: (vii) Using the confidence interval, select the correct description of the result of the survey: A. We estimate with 95% confidence that the true proportion mean economic dynamism for middle-income countries is between $40.21 and $47.54. B. We estimate with 95% confidence that the proportional economic dynamism for middle-income countries is between $40.21 and $47.54. C. We estimate…
What can you say about the interest ratings of boys and girls for these topics?
Pax World Balanced is a highly respected, socially responsible mutual fund of stocks and bonds. Vanguard Balanced Index is another highly regarded fund that represents the entire U.S. stock and bond market (an index fund). The mean and standard deviation of annualized percent returns are shown below. The annualized mean and standard deviation are for a recent 10-years period.†. If x represents return and s represents risk, then explain why the coefficient of variation can be taken to represent risk per unit of return. From this point of view, which fund appears to be better? Explain. A. Since the CV is s/s2 we can say that the CV represents the risk per unit of return; the Pax fund appears to be better because the CV is smaller. B. Since the CV is s/s2 we can say that the CV represents the risk per unit of return; the Vanguard fund appears to be better because the CV is smaller. C. Since the CV is s/x we can say that the CV represents the risk per unit of return; the Pax fund…
A FiveThirtyEight.com article reports that “Horror movies get nowhere near as much draw at the box office as the big-time summer blockbusters or action/adventure movies ... but there’s a huge incentive for studios to continue pushing them out. The return-on-investment potential for horror movies is absurd.” To investigate how the return-on-investment compares between genres and how this relationship has changed over time, an introductory statistics student fit a model predicting the ratio of gross revenue of movies from genre and release year for 1,070 movies released between 2000 and 2018. Using the plots given below, determine if this regression model is appropriate for these data
5. Management of a home appliance store wants tounderstand the growth pattern of the monthly sales of a new technology device over the past two years.The managers have recorded the relevant data inthe file P13_05.xlsx. Have the sales of this devicebeen growing linearly over the past 24 months? Byexamining the results of a linear trend line, explainwhy or why not.
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The following table contains yearly data on the price of beef from 2022 to 2024: Year Price of Beef ($/Kg) 3 5 8 2022 2023 2024 Forecast the price of chicken for 2025 using the following methods: 1. A 3-Year moving average method; 2. A simple exponential smoothing method (use a=0.5); 8. A simple linear trend model.
.A new, miracle diabetes drug that diminishes major symptoms of diabetes has been approved by the FDA. Health care professionals and researchers believe that the new drug will prolong lifespan of diabetes patients. If the population is in steady state and the incidence is constant, what will the effect of this new drug be on the prevalence of diabetes in the population? Explain.
Product failure behavior. An article in Hotwire (Dec. 2002) discussed the length of time till failure of a product pro- duced at Hewlett-Packard. At the end of the product’s life- time, the time till failure is modeled using an exponential distribution with mean 500 thousand hours. In reliability jargon, this is known as the “wear-out” distribution for the product. During its normal (useful) life, assume the prod- uct’s time till failure is uniformly distributed over the range 100 thousand to 1 million hours. a. At the end of the product’s lifetime, find the probability that the product fails before 700 thousand hours. b. During its normal (useful) life, find the probability that the product fails before 700 thousand hours. c. Show that the probability of the product failing before 830 thousand hours is approximately the same for both the normal (useful) life distribution and the wear-out distribution
The economic dynamism, which is the index of productive growth (in dollars) for countries that are designated by the World Bank as middle-income are in following table ("SOCR data 2008," 2013): Table: Economic Dynamism ($) of Middle Income Countries 25.8057 37.4511 51.915 43.6952 47.8506 43.7178 58.0767 41.1648 38.0793 37.7251 39.6553 42.0265 48.6159 43.8555 49.1361 61.9281 41.9543 44.9346 46.0521 48.3652 43.6252 50.9866 59.1724 39.6282 33.6074 21.6643 Compute a 95% confidence interval for the mean economic dynamism of middle-income countries by answering the following questions (iv) Determine t score corresponding to desired confidence level Enter value in decimal form rounded to nearest hundredth. Examples of correctly entered answers: 2.01 0.37 0.60 0.00 (v) Determine error bound of the mean: Enter value in decimal form rounded to nearest ten-thousandth. Examples of correctly entered answers: 0.0000 0.0003 3.0060 2.0700…
From the data in the table it shows the 2019 daily return data for the S&P 500 Index (stocks) and the US 30 year Bond (bonds). How do I test the hypothesis that mean daily return on stocks exceeds the mean daily return on bonds? Please show the steps. S&P500 dailt returns data: Date Price Daily Return 2019-12-31 3230.78 0.294602% 2019-12-30 3221.29 -0.578082% 2019-12-27 3240.02 0.003398% 2019-12-26 3239.91 0.512817% 2019-12-24 3223.38 -0.019545% 2019-12-23 3224.01 0.086614% 2019-12-20 3221.22 0.494478% 2019-12-19 3205.37 0.445929% 2019-12-18 3191.14 -0.043230% 2019-12-17 3192.52 0.033529% US 30 Year Bond Date Price Daily Return 31-Dec-19 2.389 2.32% 30-Dec-19 2.335 0.78% 29-Dec-19 2.317 -0.03% 27-Dec-19 2.318 -0.16% 26-Dec-19 2.321 -0.71% 25-Dec-19 2.338 0.15% 24-Dec-19 2.334 -0.83% 23-Dec-19 2.354 0.31% 22-Dec-19 2.346 0.12% 20-Dec-19 2.344 -0.43%
You invest your life's savings in 5 different hedge fund companies, each of which invests your money in 10 different in-house funds. You realize that this type of investing is risky, but you want the maximum long-term growth rate. After one year, the results are as listed in the table. Are the hedge fund companies equally good, or are there statistically significant differences between them? 12 3 4 Company Average Return (%) 8.4 6.2 6.7 14.7 12.6 Standard Deviation (%) 2.55.3 1.3 2.5 5.8 5 SSE number (rtol=0.01, atol=0.0001) SSTT number (rtol=0.01, atol=0.0001) F number (rtol=0.01, atol=0.0001) Pval number (rtol=0.01, atol=0.0001) State your decision at significant level 0.1. O (a) Cannot Reject HO O (b) Reject HO

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