The economic dynamism, which is the index of productive growth in dollars for countries that aredesignated by the World Bank as middle-income are in the table. Compute a 99% confidence interval forthe mean economic dynamism of middle-income countries. Round to three decimal places.Economic Dynamism ($) of Middle Income Countries40.3123 32.4178 51.3238 44.526836.8064 55.9383 55.118 48.993224.1657 23.1584 45.4737 24.349956.5677 56.5861 48.5996 36.620549.2797 57.153 54.0591 47.40937.4939Withcountries is between37.684333.249448.679334.716624.2627% confidence, it can said that the mean economic dynamism of middle-incomeand

Answered: Image /qna-images/answer/4727158d-5433-4079-b0b8-f002d77825bc.jpg

Answered: The economic dynamism, which is the…

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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Check My Work (2 remaining CCN and ActMedia provided a television channel targeted to individuals waiting in supermarket checkout lines. The channel showed news, short features, and advertisements. The length of the program was based on the assumption that the population mean time a shopper stands in a supermarket checkout line is 8.1 minutes. A sample of actual waiting times will be used to test this assumption and determine whether actual mean waiting time differs from this standard. a. Formulate the hypotheses for this application. Select your answer - 8.1 Ha P Select your answer - 8.1 b. A sample of 100 shoppers showed a sample mean waiting time of 8.9 minutes. Assume a population standard deviation of a = 2.8 minutes. What is the p-value? z value (to 2 decimals) p-value (to 4 decimals) C. At a = 0,.02, what is your conclusion? Select your answer- Select your answer - conclude that the population mean waiting time differs from 8.1 minutes. d. Compute a 98% confidence interval for…
39. Create a 95% confidence interval for the data set below. 49 62 54 64 55 49 48 52 65 53 62 ( , ) [three decimal accuracy] [three decimal accuracy]
21. Listening to music has long been thought to enhance intelligence, especially during infancy and childhood. To test whether this is true, a researcher records the number of hours that eight high-performing students listened to music per day for 1 week. The data are listed in the table. Music listening per day (in hours) 4.2 4.8 5.0 3.8 4.2 5.5 4.1 4.4 1. Find the confidence limits at a 95% CI for this sample. 2. Suppose the null hypothesis states that students listen to 3.5 hours of music per day. What would the decision be for a two-tailed hypothesis test at a 0.05 level of significance?
Custom-Home Resales. Regarding predicting the selling price of a home in the Equestrian Estates using the predictor variables square footage, number of bedrooms, number of bathrooms, and number of days on the market. The confidence and prediction intervals are for homes that have 3200 sq ft, 4 bedrooms, 3 bathrooms, and that remain on the market for 60 days. a. Obtain a point estimate for the mean selling price of all homes in the Equestrian Estates that have 3200 sq ft, 4 bedrooms, 3 bathrooms, and that remain on the market for 60 days. b. Obtain a 95% confidence interval for the mean selling price of all homes in the Equestrian Estates that have 3200 sq ft, 4 bedrooms, 3 bathrooms, and that remain on the market for 60 days. c. Determine the predicted selling price of a randomly selected home in the Equestrian Estates that has 3200 sq ft, 4 bedrooms, 3 bathrooms, and that remains on the market for 60 days. d. Determine a 95% prediction interval for the selling price of a randomly…
5. A researcher constructed a 95% confidence interval for the true mean number of years students take to earn a bachelor's degree. His results were (4.319, 4.841). a. What is the point estimate for the average number of years to complete a bachelor's degree? b. Does his interval support or contradict the widely held belief that it takes 4 years to complete a bachelor's degree? Why or why not?
1. Find the p-value. (Round to three or more decimal places.) 2. At the 0.01 level of significance, can the doctor conclude that the mean recovery time of patients who have the new procedure is less than the mean recovery time of patients who have the standard procedure?
The accompanying table contains the overall download and upload speeds in mbps for nine carriers in a particular country. a. Compute the mean and median. Data table The mean download speed is (Type an integer or decimal rounded to two decimal places as needed.) Carrier Download Speed Upload Speed Carrier 1 22.7 14.9 The mean upload speed is. (Type an integer or decimal rounded to two decimal places as needed.) Carrier 2 22.0 12.9 Carrier 3 20.7 8.8 The median download speed is. Carrier 4 16.6 11.1 (Type an integer or decimal rounded to two decimal places as needed.) Carrier 5 11.5 6.1 Carrier 6 9.9 6.5 The median upload speed is. (Type an integer or decimal rounded to two decimal places as needed.) Carrier 7 10.6 6.5 Carrier 8 6.7 3.0 b. Compute the variance, standard deviation, range, and coefficient of variation. Carrier 9 4.3 3.9 The variance for the download speeds is. (Type an integer or decimal rounded to two decimal places as needed.) Print Dore P Type here to search 7. 3. T Y.…
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