5.assignment.After examining these data for all the jurisdictions, someone notes that certain areas have an unusually high "percent ofpopulation 25 years and over with no high school diploma." Based on this finding, this individual concludes that the highpercentages are due to the rising population of immigrants in those areas. Further, the individual argues that any estimatesof the associated "percent of people in poverty" in those areas should be recalculated after removing this sub-populationfrom the data set, as they are causing the area to "look bad".In addition to thinking critically, use the key rules about linear regression and extrapolation to write a statisticallyappropriate response that also takes into account ethics and social responsibility. (This response should be at least aparagraph in length.)Rev 11/14/2022

It is important to approach this situation with caution and avoid making hasty conclusions. While…

Answered: estimates After examining these data…

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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Each year, researchers at the U.S. Bureau of Labor Statistics (BLS) administer the American Time Use Survey (ATUS). Researchers estimate the average amount of time Americans spend on daily activities, such as working, housework, and leisure activities. In particular, one activity that is of interest is the average amount of time Americans spend watching television each day. A researcher complied a random sample of 12 Americans and asked each person how much time they spent watching television each day. The results are given below. 2.7 2.3 3.4 0.6 4.8 1.8 3.7 4.8 1.8 4.6 4.2 1.6 Determine the point estimate, x¯ and the sample standard deviation, s. Round the solutions to four decimal places, if necessary. xwith the - on top of x = s= Using a 98% confidence level, determine the margin of error, E, and a confidence interval for the average time Americans spend watching television each day. Report the confidence interval using interval notation. Round solutions to two decimal…
Use the following scenario to answer the next 6 questions: M&Ms are your favorite vending machine snack and you purchase them often. Lately, it seems like the bags have been having a disproportionate distribution of the colors. The company claims that 24% of the candies per bag should be blue. You decide to test this claim for yourself. You purchase a large bag and find that 38 of the 224 candies are blue. Before complaining to the company, you want to be fairly sure of your accusation, so you set a 1% significance level for your test. Do you have sufficient evidence that the color distribution is different than advertised? The appropriate degrees of freedom for this test are: Group of answer choices Degrees of freedom aren't applicable to this test. 38 1 224
Use the following scenario to answer the next 6 questions: M&Ms are your favorite vending machine snack and you purchase them often. Lately, it seems like the bags have been having a disproportionate distribution of the colors. The company claims that 24% of the candies per bag should be blue. You decide to test this claim for yourself. You purchase a large bag and find that 38 of the 224 candies are blue. Before complaining to the company, you want to be fairly sure of your accusation, so you set a 1% significance level for your test. Do you have sufficient evidence that the color distribution is different than advertised? The appropriate hypothesis test for this scenario is: Group of answer choices left-tailed two-tailed right-taile
1. A researcher expects that the number of people (18 years and older) who report binge drinking in the past month will be higher for Appleton WI residents as compared to the national rate, which is 25%. The researcher samples 100 residents from Appleton WI (age 18+) and finds that 36 of the 100 Appleton residents reported binge drinking in the past month. Using this data set answer the following questions: A. What is yobt? B. What is the df for this test?
In order to estimate the mean annual family income for familiesresiding in a particular census area, Mr. Smith has interviewed asample of 600 families and found the average annual family incometo be $6000. Independently, Mr. Jones has taken a sample of 400families in the same area and found the average annual familyincome to be $6,400. Are each of these estimates unbiased? Howwould you combine these two estimates to obtain a single unbiasedestimate of smaller variance? Explain. What is the new estimate youobtain?
12.2.84 The number of successes and the sample size for a simple random sample from a population are given below. x = 6, n = 200, Ho:p= 0.02, Hạ: p# 0.02, a = 0.05 a. Determine the sample proportion. b. Decide whether using the one-proportion z-test is appropriate. c. If appropriate, use the one-proportion z-test to perform the specified hypothesis test. Click here to view a table of areas under the standard normal curve for negative values of z. Click here to view a table of areas under the standard normal curve for positive values of z. a. The sample proportion is. (Type an integer or a decimal. Do not round.)
The following statement refers to which aspect of a statistical study: "A meteorologist constructs a graph showing the total precipitation in Phoenix, Arizona in each of the months of a given year"? Description Inference Design
A health statistics agency in a certain country tracks the number of adults who have health insurance. Suppose according to the agency, the uninsured rates in a recent year are as follows: 5.2% of those under the age of 18, 12.7% of those ages 18-64, and 1.3% of those 65 and older do not have health insurance. Suppose 22.4% of people in the county are under age 18, and 61.9 % are ages 18-64. (a) What is the probability that a randomly selected person in this country is 65 or older? 157 (b) Given that a person in this country is uninsured, what is the probability that the person is 65 or older? (Round your answer to three decimal places.) x Submit Answer
Toward the middle of the harvesting season, peaches for canning come in three types, early, late, and extra late, depending on the expected date of ripening. During a certain week, the data to the right were recorded at a fruit delivery station. Complete parts (a) through (d) below. 18 trucks (Type a whole number.) (b) How many carried only extra late? 17 trucks (Type a whole number.) (c) How many carried only one type of peach? 28 trucks went out carrying early peaches; 60 carried late peaches; (a) How many trucks carried only late variety peaches? trucks (Type a whole number.) 46 carried extra late peaches; 19 carried early and late; 25 carried late and extra late; 6 carried early and extra late; 2 carried all three; 5 carried only figs (no peaches at all).
The price of a share of stock divided by the company's estimated future earnings per share is called the P/E ratio. High P/E ratios usually indicate "growth" stocks, or maybe stocks that are simply overpriced. Low P/E ratios indicate "value" stocks or bargain stocks. A random sample of 51 of the largest companies in the United States gave the following P/E ratios†. 11 35 19 13 15 21 40 18 60 72 9 20 29 53 16 26 21 14 21 27 10 12 47 14 33 14 18 17 20 19 13 25 23 27 5 16 8 49 44 20 27 8 19 12 31 67 51 26 19 18 32 (a) Use a calculator with mean and sample standard deviation keys to find the sample mean x and sample standard deviation s. (Round your answers to four decimal places.) x = s = (b) Find a 90% confidence interval for the P/E population mean ? of all large U.S. companies. (Round your answers to one decimal place.) lower limit upper limit (c) Find a 99% confidence interval for the P/E population mean ? of all large U.S.…
Please help me understand parts 1-3. Thank you in advance. The following data represent the pH of rain for a random sample of 12 rain dates. A normal probability plot suggests the data could come from a population that is normally distributed. A boxplot indicates there are no outliers. Complete parts a) through d) below.
3. A Bloomberg Businessweek North American subscriber study collected data from a sample of 2861 sub-scribers. Fifty- nine percent of the respondents indicated an annual income of $ 75,000 or more, and 50% reported having an American Express credit card. a. What is the population of interest in this study? b. Is annual income a categorical or quantitative variable? c. Is ownership of an American Express card a categorical or quantitative variable? d. Does this study involve cross- sectional or time series data? e. Describe any statistical inferences Bloomberg Businessweek might make on the basis of the survey. 4. Table 1.8 shows a data set containing information for 25 of the shadow stocks tracked by the American Association of Individual Investors. Shadow stocks are common stocks of smaller companies that are not closely followed by Wall Street analysts. The data set is also on the website that accompanies the text in the file named Shadow02. a. How many variables are in the data set?…

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