Concept explainers
(a)
To calculate: The product of the matrices A and B with the help of the matrix.
(b)
To calculate: The total number of female democrats with the help of of the matrix.
(c)
To calculate: The total number of male republicans with the help of the matrix.
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Chapter 9 Solutions
Algebra And Trigonometry 6th. Edition Annotated Instructor's Copy Blitzer
- A florist offers three sizes of flower arrangements containing roses, daisies, and chrysanthemums. Each small arrangement contains one rose, three daisies, and three chrysanthemums. Each medium arrangement contains two roses, four daisies, and six chrysanthemums. Each large arrangement contains four roses, eight daisies, and six chrysanthemums. One day, the florist noted that she used a total of 24 roses, 50 daisies, and 48 chrysanthemums in filling orders for these three types of arrangements. How many arrangements of each type did she make?arrow_forwardIn a class, 96% students have at least one smartphone, 98% have a calculator, and 95% have a calculator and at least one smartphone. What percentage of students in the class have neither a calculator nor a smartphone?arrow_forwardThe table shows the political party affiliations for a medium-sized neighborhood with 94 adults. If the neighborhood is representative of a town with an adult population of 9000, approximately how many of them are likely to be Independents? Number Political Party 34 Republicans 42 Democrats 12 Independents 6 Libertarians A 1150 B 1500 С 2800 4000arrow_forward
- Step 1: State the null and alternative hypotheses. Họ: The ethnic distribution of AIDS cases in the county is the same as the county's ethnic distribution in general. v Ha: The ethnic distribution of AIDS cases in the county is different from the county's ethnic distribution in general. ♥ Part 2 of 4 Step 2: Assuming the nulI hypothesis is true, determine the features of the distribution used to perform the goodness-of-fit test. To perform a goodness-of-fit test for this problem, use a chi-square distribution with v degrees of freedom. Part 3 of 4 Step 3: Find the p-value of the point estimate. First identify the observed andlexpected values. Observed and Expected Values Observed Values (O) Ethnicity Expected Values (E) White 1634 Black/African-American 1089 Asian, Pacific Islander 160 Hispanic 970 Now find the p-value. P(x 2v ||arrow_forwardNeed help with part: D, E and Farrow_forwardA city official would like to know if there is public support for increasing funding for arts programs. To collect data, the city official stands outside a concert hall after a show and surveys every 25th person to exit and asks their opinion about raising funds for the arts. Which of the following describes the population in this scenario? all residents of the city the members of the city council all city residents who support the arts the people surveyed by the city officialarrow_forward
- lon? C12. The following table presents the number of parolees (per 100,000 people) for 12 of the most populous states as of July 2015. State Parolees (per 100,000 people) California 292 Texas 556 New York 288arrow_forwardThe percentage of each ethnic group in a certain county is as in the following table. Ethnic Breakdown of County Ethnicity White Black/African-American Asian, Pacific Islander Hispanic Percent of Total County Population There have been 2340 reported cases of AIDS in the county. The cumulative number of AIDS cases reported for the county is broken down by ethnicity in the following table. Number of AIDS cases in the county by ethnicity Ethnicity Number of AIDS cases 1040 555 291 454 White Black/African-American Asian, Pacific Islander Hispanic 46.3% 22.3% 13.3% 18.1% Perform a goodness-of-fit test with a 8% level of significance to determine whether the occurrence of AIDS cases follows the distribution of ethnicities of the general population in the county. Step 1: State the null and alternative hypotheses. Ho: The ethnic distribution of AIDS cases in the county is the same as the county's ethnic distribution in general. V Ha: The ethnic distribution of AIDS cases in the county is…arrow_forwardAt PM Mall, shoppers were asked what network of sim (Smart, Globe, TM) they use. The following responses were gathered: 27 Smart, 41 Globe, 32 TM, 24 both Globe and TM, 20 both Smart and Globe, 18 both Smart and TM, and 16 uses all the three. How many use Globe only?arrow_forward
- Find the mode of the following number of stingrays spotted by each person during a snorkeling trip. 11,5,7,5,11,1,7,4,1,7,7arrow_forwardIn the provided table, the education information and incomes of 73,736 people are given. The rows are labeled with education status and the columns are labeled with income range. The total of all entries in each row gives the total number of people with the corresponding education status and similarly, the total of all entries of a particular column gives the number of people with the corresponding income range. Please answer subpart 4 and 5.arrow_forwardcomplaint and, if so, whether the complaint was medical or nonmedical in nature. After a year, a tally from these patients was collected to count number who left the HMO voluntarily. Here are the data on the total number in each group and the number who voluntarily left the HMO: No complaint Medical complaint Nonmedical complaint Total A certain health maintenance organization (HMO) wishes to study why patients leave the HMO. A SRS of 423 patients was taken. Data was collected on whether a patient had filed a 177 111 135 Left 64 27 50 If the null hypothesis is Ho : pı = P2 = P3 and using a = 0.05, then do the following: (a) Find the expected number of people with no complaint who leave the HMO: (b) Find the expected number of people with a medical complaint who leave the HMO: (c) Find the expected number of people with a nonmedical complaint who leave the HMO: (d) Find the test statistic: (e) Find the degrees of freedom: (f) Find the critical value: (g) The final conclusion is OA. We…arrow_forward
- Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:CengageHolt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGALLinear Algebra: A Modern IntroductionAlgebraISBN:9781285463247Author:David PoolePublisher:Cengage Learning
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