An article summarizes a report of law enforcement agencies regarding the use of social media to screen applicants for employment. The report was based on a survey of 800 law enforcement agencies. One question on the survey asked if the agency routinely reviewed applicants' social media activity during background checks. For purposes of this exercise, suppose that the 800 agencies were selected at random, and that you want to use the survey data to decide if there is convincing evidence that more than 25% of law enforcement agencies review applicants' social media activity as part of routine background checks. The actual sample proportion observed in the study was p̂ = 0.34. Based on this sample proportion, is there convincing evidence that more than 25% of law enforcement agencies review social media activity as part of background checks, or is this sample proportion consistent with what you would expect to see when the null hypothesis is true? Test the relevant hypotheses using  ? = 0.05.   Find the test statistic and P-value. (Round your test statistic to two decimal places and your P-value to four decimal places.) z= ??? P= ????

Q: An on-line retailing firm conducts a study into the number of on-line purchases of footwear made…

A: Defines that p is true proportion of the number of on-line purchases of footwear made during all of…

Q: In the NFL, Coaches can throw "challenge" flags if they believe officials have made an incorrect…

A:

Q: A survey asked 827 randomly sampled registered voters in California to select a response best…

A: For the above analysis: Null hypothesis: There is no difference in support of drilling b/w those who…

Q: hypothesis H0:p=0.65 where p is the proportion of all adults in the city who meet or exceed the…

A: Given that  n=400 , X=245 , p0=65%=0.65 p=X/n

Q: A research group conducted an extensive survey of 3182 wage and salaried workers on issues ranging…

A: The given information is as follows: Denote the population proportion of all wage and salaried…

Q: In the twentieth century, it was a common practice in Southern California for houses to be built…

A: Solution: Given information: n1= 138n2= 84x1=…

Q: If a hurricane was headed your way, would you evacuate? The headline of a press release states,…

A: Sample size = n = 4625 Sample proportion = p̂ = 0.32

Q: You may need to use the appropriate technology to answer this question. A large corporation sends…

A: given that, A B C D 1 5 17 19 13 6 18 3 9 4 10 12 14 2 20 6 15 11 16 7

Q: According to online resources, about 8% of all males have some color perception defect, most…

A: Given,8% of all males have the same color perception defect, most commonly red-green…

Q: You may need to use the appropriate technology to answer this question. A large corporation sends…

A: Let us perform a One-Way ANOVA in Excel:Step 1: State the hypotheses.Claim:Is there a significant…

Q: The call center manager at InsuranceCorp is responsible for ensuring customer satisfaction. To this…

A:

Q: A 2015 Gallup poll of 1,627 adults found that only 22% felt fully engaged with their mortgage…

A: Here the sample size is number of adults.

Q: It is believed that 11% of all Americans are left-handed. A college needs to know how many…

A: Solution: Given information: n = 210 Sample size  p= 0.11 Population proportion

Q: In the NFL, Coaches can throw "challenge" flags if they believe officials have made an incorrect…

A: Given n(sample size)=316 x( no. of success) =154

Q: One of the most important aspects of a store's image is the perceived quality of its merchandise.…

A:

Q: In the NFL, Coaches can throw "challenge" flags if they believe officials have made an incorrect…

A: The claim of the NFL team owners is, "proportion of calls in which referees were wrong is more than…

Q: n the NFL, Coaches can throw "challenge" flags if they believe officials have made an incorrect call…

A: Given: α=0.05   z% CI or confidence interval means, if we take the measure repeatedly from the…

Q: of Male Adolescent (aged 15 to 19). The respondents were randomly assigned to answer the survey…

A: We see that males were asked questions about their sexual behavior in two different ways, i.e,  A…

Q: Last year, the marist poll conducted a national survey of adults and found that 35% responded "A lot…

A: Null and Alternate Hypothesis: H0: Response to this question by adults nationwide has not changed…

Q: In the twentieth century, it was a common practice in Southern California for houses to be built…

A: From the provided information,

Q: A survey asked 827 randomly sampled registered voters in California to select a response best…

A: The data for responses of the graduated college and didn't graduate college respondents is given.…

Q: In the twentieth century, it was a common practice in Southern California for houses to be built…

A: Step 1: It is Hyopthesis test for difference between two population proportions  population…

Q: A pharmaceutical company conducted a study to test the effectiveness of its new anti-depression…

A:

Q: A research group conducted an extensive survey of 3165 wage and salaried workers on issues ranging…

A:

Q: 2.Are babies born to mothers who use assistive reproduction technology (ART) more likely to be born…

A: Chi-Square Test of independence: The hypothesis testing for the independence is calculated with the…

Q: In June 2012 the Gallup organization conducted a pollusing a random sample of 1004 adults, aged 18…

A: From the given information, we have confidence Interval is 95%  Sampling error is 4 percentage…

Q: In the NFL, Coaches can throw "challenge" flags if they believe officials have made an incorrect…

A: It was stated that in the NFL, Coaches can throw "challenge" flags if they believe officials have…

Q: 4. Recall that the binomial distribution with probability of success p is nearly normal when the…

A: From the given information,  Total population=691797. African-Americans=165,814. Non…

Q: From the U.S. Census Bureau's American Community Survey in 2019 it was found that 33.13% of United…

A: Note: Hi there! Thank you for posting the question. As you have posted multiple questions, as per…

Q: TOR is free and open-source web browser (https://www.torproject.org/) enabling anonymous…

A: Given: Total No. of students studied = 234 No. of students with favorable outcome (who had heard of…

Q: $40-million renovation of its state fairgrounds, which included the building of a miniature golf…

A: Hypothesis testing

Q: A researcher groups college student in a study based on their year in college (freshman, sophomore,…

A: A researcher groups college student in a study based on their year in college (freshman, sophomore,…

Q: who live within 20 miles of the coast in high hurricane risk counties of eight southern states. In…

A: It is given that sample size (n) is 4,625 and p hat value is 1-0.32 = 0.68.

Q: researcher is interested in factors related to academic performance of students.  She hypothesized…

A: Given : Test-statistic of 23.75 and a p-value of 0.0006.

Q: In the twentieth century, it was a common practice in Southern California for houses to be built…

A: From the provided information,

Q: If a researcher failed to use a random sample, how would this affect the research conclusion?   If…

A: Any test criteria's basic assumption is to select a sample that is random. A random sample would be…

Q: A local bank has three branch offices. The bank has a liberal sick leave policy, and the CEO was…

A: Given : Source df SS MS F Treatments 2 89.8333 44.9167 6.2056 Error 7 50.6667 7.2381…

Q: In 2014, Scotland was considering independence from England, going so far as to take a referendum…

A:

Q: rom the U.S. Census Bureau’s American Community Survey in 2019 it was found that 33.13% of United…

A: since there are multiple parts, first three subparts are answered. kindly repost for more help .

Q: According to the National Institute on Alcohol Abuse and Alcoholism (NIAAA), and the National…

A: As per honor code, we will only answer first three questions: Given information: P=0.37n=364x=136 A)…

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.