A concerned group of citizens wanted to know if the proportion of forcible rapes in Indonesia was different in 2011 than in 2010. Their research showed that of the 113,231 violent crimes in Indonesia in 2010, 7,622 of them were forcible rapes. In 2011, 7,439 of the 104,873 violent crimes were in the forcible rape category. Test at a 5% significance level. Answer the following questions: Is this a test of two means or two proportions? Which distribution do you use to perform the test? What is the random variable? Write the null and alternative hypothesis in symbols. Is this test right-, left-, or two-tailed? What is the p-value? Do you reject or not reject the null hypothesis? At the ___ level of significance, from the sample data, there ______ (is/is not) sufficient evidence to conclude that ____________.

Q: In 2011,the New York Yankees won 97 out of 162 of their baseball games. Is there sufficient evidence…

A: 1) Here, p = 0.104 and alpha = 0.05 p>alpha,  If the p-value is greater than alpha, you accept…

Q: In a survey of working parents (both parents working), one of the questions asked was "Have you…

A:

Q: In Ontario, chemical accidents account for 1 in 5 workplace accidents. In Que- bec, out of a sample…

A: Introduction: Denote p as the true proportion of workplace chemical accidents in Place Q.

Q: Is there an association between hair color and body type? The table below shows the results of a…

A: There are two categorical variables which are hair color and body type. Hair color has 3 types which…

Q: A Bloomberg Businessweek subscriber study asked, "In the past 12 months, when traveling for…

A:

Q: i want Z

A: The known values are, x = 328 n = 1160 The sample proportion is,

Q: a) Workers and senior-level bosses were asked if it was seriously unethical to monitor employee…

A: The data is given by :      Yes No Workers 192 244 Bosses 40 81         To test that :…

Q: Christina, a restaurant manager, would like to make the claim that the average number of customers…

A: Christina reject or fail to reject the null hypothesis is obtained below:From the information, the…

Q: A psychologist is interested in testing whether there is a difference in the distribution of…

A: In the study, the interest to test is to check whether there is a difference in the distribution of…

Q: Compute the value of the test statistic. Round your answer to two decimal places.

A:

Q: In a survey of working parents (both parents working), one of the questions asked was "Have you…

A: From the provided information,

Q: Radio Shack reported that they sell 21% of all home computers. a) Is this claim supported at the 1%…

A: GivenNo. of computers (n)=700x=120p^=120700=0.171α=0.01

Q: who

A: Given:   Men Women Plan to vote 160 175 Do not plan to vote 140 125 Level of significance,…

Q: Test the claim that the proportion of men who own cats is larger than 50% at the .025 significance…

A: Given that  Claim :  The proportion of men who owns cats is larger than 50%  Hypothesized proportion…

Q: Nancy, an economist, would like to make the claim that the average weekly grocery budget for…

A: Given that,  Z-test is applicable as the population standard deviation is known. The level of…

Q: A researcher surveyed randomly selected Democrats and Republicans asking them what the number one…

A: a. The test is check whether there is evidence to conclude that there is difference in what…

Q: A grassroots group opposed to a proposed increase in the gas tax claimed that the increase would…

A: Given Information: Consider the given table and test the three mean commuting mileages are same at…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A:

Q: In another Harris poll, adults were asked if they are in favor of abolishing the penny. Among 200…

A: From the given information,                        Sample size (n) =200 Probability of success…

Q: Is there an association between hair color and body type? The table below shows the results of a…

A: H0: There is no association between hair color and body type.  H1: The is an association between…

Q: A researcher surveyed randomly selected Democrats and Republicans asking them what the number one…

A: 1.   Here it is needed to test, whether there is a difference what Democrats and Republicans think…

Q: In a previous poll, 39% of adults with children under the age of 18 reported that their family ate…

A: We have to test the claim that the proportion of families with children under the age of 18 who eat…

Q: In a survey of working parents (both parents working), one of the questions asked was "Have you…

A: From the provided information,

Q: In a previous poll, 34% of adults with children under the age of 18 reported that their family ate…

A: We have to find given hypotgesis.

Q: Many people believe that criminals who plead guilty tend to get lighter sentences than those who are…

A: The null hypothesis for testing is defined as, H0: The sentence (sent to prison or not sent to…

Q: In a survey of working parents (both parents working), one of the questions asked was "Have you…

A: According to the given information here we will use z test for proportion The null and alternative…

Q: A magazine subscriber study asked, "In the past 12 months, when traveling for business, what type of…

A: It is needed to check whether the type of ticket purchased independent of the type of flight.

Q: Can you reject the claim that the proportion of 18 to 24-year-olds living in their parents' homes…

A: Given that  Sample sizes n1=248 , n2=244 Sample proportion p1^=0.515 , p2^=0.412

Q: A veterinarian is interested in researching the proportion of men and women cat owners and believes…

A: Preliminary: a. A random sample of 60 men and another random sample of 80 women are considered. In…

Q: In a survey of working parents (both parents working), one of the questions asked was "Have you…

A:

Q: A Bloomberg Businessweek subscriber study asked, "In the past 12 months, when traveling for…

A: Given that  The type of tickets as row denoted by R First Class  Business Class Economy Class  And…

Q: For Americans using library services, the American Library Association claims that at most 70% of…

A: Here, One sample Z test is applicable. x = 85 , n = 100

Q: In his book Outliers, author Malcolm Gladwell argues that more baseball players have birthdates in…

A: Solution: Given data: Sample size =12 Level Of significance = 0.05 To test the given claim

Q: i need to know how to solve this

A: The provided information are:

Q: In a random sample of missions flown by B-17’s, 38 returned and 24 were lost. In a random sample of…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: For a certain year, a study reports that the percentage of college students using credit cards was…

A:

Q: A food services manager for a baseball park wants to knowif there is a relationship between gender…

A: Given: Level of significance (α) = 10% that is 0.10 The hypotheses can be constructed as: H0: There…

Q: 2. For Americans using library services, the American Library Association claims that at most 70% of…

A: Given: The random sample of patrons selected are n=100. The number of patrons who borrowed books are…

Q: A food services manager for a baseball park wants to know if there is a relationship between gender…

A: Level of significance: From the given information, Claim: Test whether there is any association…

Q: Is the proportion of wildfires caused by humans in the south different from the proportion of…

A: Given : x1= 350.0 n1= 519 x2= 383.0 n2= 500 significance level, 0.01

Q: In the General Social Survey, respondents were asked "If your party nominated a woman for President,…

A:

Q: A national organization that conducts research on the cost and quality of health care in the U.S.…

A: A national organization that conducts research on the cost and quality of health care in the U.S.…

Q: Twenty years ago, 57% of parents of children in high school felt it was a serious problem that high…

A: Denote p as the true proportion of parents, who think that high school students were not being…

Q: dults aged 18 years old and older were randomly selected for a survey on obesity. Adults are…

A: Let p1 denote the proportion of southern women who are obese and p2 denote the proportion of…

Q: The results of a random sample of students by type of school and their attitudes on safety steps…

A: Given:     Taken all steps  Taken some steps  Total Public 40 51 91 Private 64 34 98 total…

Q: A Bloomberg Businessweek subscriber study asked, "In the past 12 months, when traveling for…

A: In hypothesis testing we test the hypothesis regarding the population parameter.

Q: An immunologist is testing the hypothesis that the current flu vaccine is less than 71​%…

A: In hypothesis we want to conclude that whether there is significant evidence or not of the statement…

Q: Suppose that, in a comparison of two holiday companies’ customers, of the 75 who went with Happy…

A: Given data : x1= 45 n1= 75 x2= 48 n2= 90 significance level, 0.025

Q: A polling company contends that an agent conducts a mean of 53 in-depth home surveys every week. A…

A: Correct option is (e)

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.