Exercise 3Covid-19 vaccine experimental claims a protection rate of at least 95%for Pfizer. Describe both the Type l and Type Il errors in context. Whicherror is the more serious?Type I: Vaccinated people believe the vaccine protection rate for theCovid virus is less than 95% when it actually is at least 95%.Type II: Vaccinated people believe the Covid vaccine has at least a 95%protection rate when it has a protection rate that is less than 95%.Question:Which type of error has the greater consequence, Type I orТуре 1?Larson & Farber, Elementary Statistics: Picturing the World, 3e17

Given Type I Vaccinated people believe the vaccine protection rate for the Covid virus is < 95%…

Answered: Exercise 3 Covid-19 vaccine…

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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For a set of time series data, the following measures of forecast accuracy were found using the naive method as the forecast for the next period. MAE = 4.00 MSE = 18.00 MAPE 27.81% = For the same time series data, the following measures of forecast accuracy were found using the average of all the historical data as the forecast for the next period. MAE = 2.56 MSE = 7.80 MAPE 18.33% Which method, the naive method or using the average of all the historical data, appears to provide the more accurate forecasts for the historical data? Explain. O Using the naive method appears to provide more accurate forecasts, because MAE, MSE, and MAPE using that method are all lower than MAE, MSE, and MAPE using the average of all the historical data. O Using the average of all the historical data appears to provide more accurate forecasts, because MAE, MSE, and MAPE using that method are all lower than MAE, MSE, and MAPE using the naive method. O Using the average of all the historical data appears to…
9:14 ← Week 1: Quiz 2 of 19 gas and oil companies O deli stores Current Attempt in Progress A news report states that sales of U.S. homes declined 3% during the previous month. Which type of business would be most likely to include this information in their business decisions? Save for Later car manufacturer lumber company business attire - / 2.5 + LTE 95 13: Attempts: 0 of 2 used Submit Answer 5 SUPPORT
Let's say the program reduces the risk of 30-day readmission. If 5% of the patients who received early mobility were re - admitted and 10% of the patients who did not receive it were re - admitted, we can infer: Patients who received early mobility were times as likely to be re- admitted compared to those who did not. a. 1.50 b. 0.50 c. 10.00 d . 2.00
Plant X manufactures 70 percent of a certain company's bicycles, and Plant Y manufactures 30 percent. It has been found that 4 percent of the bicycles manufactured at Plant X and 5 percent of the bicycles manufactured at Plant Y are defective. What percent of the bicycles manufactured by the company are not defective? O 87.2% O 91.3% O 95.5% O 95.7%
10
A consulting group recently conducted a global survey of product teams with the goal of better understanding the dynamics of product team performance and uncovering the practices that make these teams successful. One of the survey findings was that 32% of organizations have a coherent business strategy that they stick to and effectively communicate. Suppose another study is conducted to check the validity of this result, with the goal of proving that the percentage is less than 32%. Complete parts (a) and (b) below. a. State the null and research hypotheses. Identify the null and alternative hypotheses. O A. Ho: as0.32; H,: a>0.32 O B. Ho: 120.32; H: <0.32 OC. Hoi a#0.32; H: =0.32 O D. Ho: 1=0.32; H4: n#0.32 b. A sample of 200 organizations is selected, and results indicate that 58 organizations have a coherent business strategy that they stick to and effectively communicate. Use the p-value approach to determine at the 0.05 level of significance whether there is evidence that the…
The average starting salary of students who graduated from colleges of Business in 2009 was $48,400.A sample of 100 graduates in 2010 showed an average starting salary of $50,000. Assume the standarddeviation of the population is known to be $8000. We want to determine whether or not there hasbeen a significant increase in the starting salaries.Step 1. Statement of the hypothesis Step 2. Standardized test statistic formula Step 3. State the level of significance Step 4. Decision Rule (Draw a bell to show rejection zone) Step 5. Calculation of the statistic Step 6. Conclusion
The proportion of people who live after fighting cancer is 0.75. Suppose there is a new therapy that is used to increase the survival rate. Use the parameter p to represent the population portion of people who survive after fighting cancer. For a hypothesis test of the therapy’s effectiveness, researchers use a null hypothesis of p = 0.75. Pick the correct alternative hypothesis. 1. p > 0.75 2. p < 0.75 3. p 6= 0.75
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If the response rate you would obtain by mailing all your customers (i.e., no model RR) is .035, and an RFM model you develop allows you to instead obtain a response rate of .05, then your lift is: 116.27 1,116.27 1.1627 another amount 11.627
Elementary Statistics Unit 3: Section 5 Exercises Exercise 6 Results from the National Health and Nutrition Examination Survey (NHANES) conducted thirty years ago revealed that out of 378 randomly selected adults in the United States 57 were considered to be obese. In this year's National Health and Nutrition Examination Survey, out of 426 randomly selected adults in the United States 135 were considered to be obese. Based on these results, can one conclude, at the 0.01 level of significance, that the percentage of adults in the United States that are obese is considerably higher now than it was thirty years ago?

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