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.)xSubmit Answer

AgeProbabilityUnder 180.05218 – 64 0.12765 or older0.01322.4% of the people in the country are under…

Answered: A health statistics agency in a certain…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

. In an upcoming decision to relocate, a new graduate’s decision on location choice comes down to housing prices. The following data are the monthly rental prices for a sample of unfurnished studio apartments in Concord, New Hampshire, and a sample of unfurnished studio apartments in Charleston, West Virginia: Concord$955 $980 $940 $975 $965 $990 $1,240 $1,120Charleston$725 $705 $695 $725 $690 $745 $575 $800a. For each set of data, compute the mean, median, mode, range, standard deviation, and coefficient of variation. b. What conclusions can you draw about unfurnished studio apartments renting in Concord versus Charleston? Compare and contrast.
4. A report describes a study conducted by a bank. Data consistent with summary values given in the report are summarized in the table. Suppose that this data resulted from a random sample of 800 adult Americans age 20 to 39 years old who have at least one credit card. Each person in the sample was classified according to age (with possible categories of 20 to 24 years, 25 to 29 years, 30 to 34 years, and 35 to 39 years). The people in the sample were also classified according to whether or not they pay the full balance on their credit cards each month or sometimes or always carry over a balance from month to month. Pay Full BalanceEach Month Carry Balance fromMonth to Month Age 20 to 24 years 75 95 Age 25 to 29 years 71 127 Age 30 to 34 years 75 145 Age 35 to 39 years 70 142 A) To investigate whether or not people paying their balance in full each month is related to age, which chi-square test (homogeneity or independence) would be the appropriate test? Explain your…
The National Safety Council released the following data on the incidence rates for fatal or lost-worktime injuries per 100 employees for several industries in three recent years. Industry Year 1 Year 2 Year 3 Textile .46 .48 .69 Chemical .52 .62 .63 Communication .90 .72 .81 Machinery 1.50 1.74 2.10 Services 2.89 2.03 2.46 Nonferrous metals 1.80 1.92 2.00 Food 3.29 3.18 3.17 Government 5.73 4.43 4.00 Compute r for each pair for years and determine which years are most highly correlated
In a 2012 report from the U.S. Department of Education breaking down the race and gender of every U.S. college graduate receiving a bachelor's degree in 2009-2010, we see the following data for white, black, and Hispanic graduates. (Numbers are in 1000s.) Race White (Expected) Black (Expected) Hispanic (Expected) Total Gender Males 514 (508.32) 56 (70.01) 55 (59.40) 625 Females 654 (689.68) 109 (94.99) 85 (80.60) 848 Both What is the contribution of Hispanic females to the chi-square test-statistic? A. O 0.24 B. 4.40 C. 80.60 D. 60.71 1198 165 140 1473 Source: "Degrees cConferred by Sex and Race," National Center for Education Statistics, U.S. Department of Education. https://nces.ed.gov/fastfacts/display.asp?id=72
A Statistics class reports the following data on Sex and Eye Color for students in the class: Green/Hazel/Other Total Blue 8 Brown 20 34 4 16 32 36 66 Males Females Total 12 16 12 18 a. What percent of the blue-eyed students are male? type your answer... % b. What percent of the class are blue-eyed males? % type your answer... c. What percent of the male students have blue eyes? type your answer... % d. What percent of the students who do not have blue eyes are females? % type your answer... e. What's the conditional distribution of sex for the brown-eyed students? Male: type your answer... % Female: type your answer... % f. What's the conditional distribution of Eye Color for the males? Blue: type your answer... Brown: type your answer... % %
17. Answer the following questions for two stat classes. Test Scores for Class A 99; 56; 78; 55; 32; 90; 80; 81; 56; 59; 45; 77; 85; 84; 70; 72; 68; 32; 79; 90 Test Scores for Class B 99; 78; 68; 83; 81; 89; 88; 76; 65; 45; 98; 90; 80; 85; 84; 79; 78; 98; 90; 79; 81; 324 a. Create a box plot for each set of data. Use one number line for both box plots. b. Which box plot has the widest spread for the middle 50% of the data (the data between the first and third quartiles)? What does this mean for that set of data in comparison to the other set of data?
Suppose we have the following data available for the average number of hours spent in the Santa Fe College Math lab. Male Female 1.50 0.75 1.20 0.82 1.30 0.91 1.05 0.84 0.75 0.59 0.80 1.02 1.00 1.90 0.95 2.10 0.925 2.20 2.50 2.50 3.00 3.50 3.50 2.20 4.01 1.80 Use Data Displays to comment on the shape of the distribution, measures of center and spread, possible skew, and outliers for both genders. (Hint: Use as many displays as needed.)
Is there a relation between incidents of child abuse and number of runaway children? A random sample of cities (over 10,000 population) gave the following information about the number of reported incidents of child abuse and the number of runaway children. (Reference: Federal Bureau of Investigation, U.S. Department of Justice.) City 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Abuse cases 113 33 41 60 52 99 31 56 15 67 106 59 45 74 84 Runaways 648 188 285 687 421 590 284 277 162 473 600 432 317 580 592 Use a 1% level of significance to test the claim that there is a monotone-increasing relationship between the ranks of incidents of abuse and number of runaway children. (a) Rank-order abuse using 1 as the largest data value. Also rank-order runaways using 1 as the largest data value. Then construct a table of ranks to be used for a Spearman rank correlation test. City Abuse CasesRank x RunawaysRank y d = x - y d2 123456789101112131415 Σd2 = (b) What is the level of…
The table below shows the auto insurance quotes for two leading companies for a sample of 15 families. Assume the populations SDs are similar, but unknown. The President of the American Insurance Institute wants to compare the yearly costs of such insurance offered by the two companies. At the 0.10 level of significance, can we conclude that there is a difference in the amounts quoted? Families Southern Car American Mutual ($) ($) 1 2090 1610 2 1683 1247 3 1402 2327 4 1830 1367 5 930 1461 6 697 1789 7 1741 1621 8 1129 1914 9 1018 1956 10 1881 1772 11 1571 1375 12 874 1527 13 1579 1767 14 1577 1636 15 860 1188
Suppose a government organization reported the accompanying data on the number of speed-related crash fatalities during holiday periods for the years from 1994 to 2003. Speed-Related Fatalities Holiday Period 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 New Year's Day 143 144 176 76 219 138 171 134 210 70 Memorial Day 195 176 185 197 138 183 156 190 188 181 July 4th 178 219 202 179 169 178 219 64 234 184 Labor Day 189 188 166 179 162 171 180 138 202 189 Thanksgiving 212 198 218 210 203 168 187 217 210 202 Christmas 152 129 66 183 134 191 155 210 60 198 (a) Calculate the standard deviation for the New Year's Day data. (Round the answer to three decimal places.) (b) Without calculating the standard deviation of the Memorial Day data, determine whether the standard deviation for the Memorial Day data would be larger or smaller than the standard deviation of the New Year's Day data. larger smaller (c) Memorial Day and Labor Day are holidays that always occur on Monday and Thanksgiving…
In one particular rainforest in Tasmania, it has been found that 70% of the trees are eucalyptus trees; 20% of the trees are Australian blackwood trees and 10% of the trees are myrtle beech trees. Unfortunately, this rainforest has recently been affected by bushfires; and we are interested in determining whether or not the above percentage distribution of trees has been affected by these bushfires. When the number of trees remaining were counted after several had been burnt down by the bushfires, it was found that there were a total of 500 trees left. Of these, 320 were eucalyptus trees; 120 were Australian blackwood trees and 60 were myrtle beech trees. A scientist would like to know if there is evidence of a significant change in the percentage distribution of trees aş a result of these unfortunate bushfires. (i) Use statistical notation to state the appropriate null and alternate hypotheses. (ii) Calculate the chi-squared test statistic for these data. (ii1) Given a p-value of 0.038…

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS