Of a random sample of 69 health insurance firms, 47 did public relations in-house, as did 40 of an independent random sample of 69 casualty insurance firms. Find and interpret the p-value of a test of equality of the population proportions against a two-sided alternative.
Q: Candidate T wants to determine if there is a difference in his popularity between men and women. To…
A:
Q: Professors collected data consisting of eye color and gender of statistics students. Among 950 male…
A: Given that, For males: X1= 372 and sample size n1= 950 p1^ = X1/n1 = 372/950 =0.3916 For females:…
Q: A direct mail appeal for contributions from a university’s alumni and supporters is considered to be…
A: Solution: Given information: n= 173 Sample size of people x= 18 people receive monetary…
Q: In a random sample of Formula 1 drivers, 161 were European and 39 were not. Use a 0.05 significance…
A: Given: n = 161 x = number of drivers who are not Europeans x = 39 Sample proportion P = 39/161 =…
Q: Suppose Diana, an educational researcher at a local university, wants to test the impact of a new…
A: Diana selects a simple random sample of 68 freshmen and divides them into 34 pairs. we have given,…
Q: A father is concerned that his teenage son is watching too much television each day, since his son…
A: 1.9, 2.3, 2.2, 1.9, 1.6, 2.6, 1.4, 2.0, 2.0, 2.2 CL=0.95
Q: The safety commissioner in a large city wants to estimate the proportion of buildings in the city…
A: The following information has been given: The sample size is n=40. The favorable cases are x=4.
Q: Because of the increased cost of housing, a national real estate board wants to compare the…
A:
Q: a study was conducted to determine the proportion of people who dream in black and white instead of…
A: The objective of this question is to test the claim that the proportion of people over 55 who dream…
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: Suppose Marcella wants to compare music listening time among college students on weekdays versus…
A: The t-test is one of the most use full statistical tests in statistical inference. Most of the small…
Q: Phineas Phillips, from Philadelphia, has a fascination with fun phone facts. But Phineas has…
A:
Q: A direct mail appeal for contributions from a university's alumni and supporters is considered to be…
A: n=220x=37Sample proportion(p^)=xnSample proportion(p^)=37220=0.1682Population proportion(P)=0.22and…
Q: A direct mail appeal for contributions from a university's alumni and supporters is considered to be…
A: Solution: Given information: n= 310 Sample size of people x= 67 people receive monetary…
Q: A study was conducted to determine the proportion of people who dream in black and white instead of…
A: Among 274 people over the age of 55, 76 dream in black and white, and among 323 people under the age…
Q: A study was conducted to determine the proportion of people who dream in black and white instead of…
A: Dear student as per guidelines we answer the first three subparts only. Please post other subparts…
Q: Due to recent trends in the childcare industry, the firm suspects that the that the mean annual…
A: Solution: Given information: n1=20 Sample size of Illinoisn2= 20 Sample size of…
Q: A city planning board wishes to determine whether a local community has any difference in preference…
A: The two samples of 500 individuals;n1=n2=500 there were 163 positive responses in the first sample…
Q: A test of qualifying skills was taken by random samples of aspiring court reporters in both Iowa and…
A: In the bootstrap distribution, many samples of same size are randomly generated from the population…
Q: An apple orchard's workers pick 12,500 apples in the month of October. A sample of 300 of these…
A: To find: The best estimate of the percent of apples picked at the orchard in October that are…
Q: In a National Institute on Alcohol Abuse and Alcoholism survey, 33% of American adults said that…
A: Given: n= 2300 ,x= 805 p= 0.33 ,significance level(∝)= 95.0 p̂= 805 / 2300 =define hypothesis;-
Q: Suppose we want to test whether women are more likely to own a cat than men. We randomly sample 200…
A: The test hypotheses are given below: Null hypothesis: H0:p1=p2 Alternative hypothesis: H1:p1>p2…
Q: reasons, calf dehorning has become a routine practice at dairy farms. A report by a continental…
A: Answer The sample size [n] =635The favorable cases [x] = 513The population proportion [p] = 0.80
Q: Among college students, the proportion p who say they’re interested in their congressional…
A: Given: Among the college students the proportion p who say they’re interested in their…
Q: The College Board provided comparisons of Scholastic Aptitude Test (SAT) scores based on the highest…
A: Define:Sample 1: The SAT math test scores for students whose parents are college graduates with a…
Q: (a) Formulate the hypotheses that can be used to determine whether the sample data support the…
A: It is required to test whether students whose parents attained a higher education level had a higher…
Q: school administrator claims that 85% of the students at his large school plan to attend college…
A: Given that ; Sample size (n) = 50 P = 85 % P(cap) = 76% By using one sample proportion test we get
Q: the 1920's about 97% of the U.S. colleges and universities required a physical education course for…
A:
Q: Among college students, the proportion p who say they’re interested in their congressional…
A:
Q: poll of 60 people asking “do you prefer dogs or cats?” Was taken, and 53 of those surveyed said they…
A: Sample size n =60 Favorable cases x =53 Sample proportion p^=x/n =53/60 =0.8833 Population…
Q: Type O-negative blood type is called the universal donor type because it is compatible with any…
A: Given: Sample size is n =300. Sample number of individuals to have type O-negative blood type is x =…
Q: Among college students, the proportion p who say they’re interested in their congressional…
A: Givensample size(n)=255x=172p^ =172255=0.675α=0.05
Q: Can you conclude that the proportion of boys who are overweight differs from the proportion of girls…
A: Here use proportion test for 2 sample
Q: In the Star and Tribune newspaper, there is an article entitled "1 in 8 school buses fail tests."…
A: Given information: 90% confidence interval estimate for 0.152<p<0.208.
Q: How often do you go out dancing? This question was asked by a professional survey group on behalf of…
A: Let p1: proportion of single men who go out dancing occasionally p2:proportion of single women who…
Q: USA Today (Feb. 17, 2011) described a survey of 1,008 American adults. One question on the survey…
A: a) The sample proportion is p-cap = 205/1008 = 0.203 b) The population proportion p is…
Q: The College Board provided comparisons of Scholastic Aptitude Test (SAT) scores based on the highest…
A: Given data: College Grads High School Grads 485 442 518 580 650 479 570 486 566 528…
Q: A direct mail appeal for contributions from a university’s alumni and supporters is considered to be…
A: Provided information is Population proportion(p) = 0.15 sample size(n) = 173 Sample proportion…
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: Are American men or women more into online dating? Researchers from a pop culture magazine conducted…
A: The test hypotheses are: Null hypothesis: H0: p1 = p2, that is, there is no difference in the…
Q: A direct mail appeal for contributions from a university’s alumni and supporters is considered to be…
A: sample size(n)=206x=21significance level()=0.10sample proportion()=
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: To test the fairness of law enforcement in Bartow County, a local citizens' group want to know…
A: TicketedTicketedNot TicketedRow TotalsMen117586Women12102114Column Totals23177200Significance level…
Q: The College Board provided comparisons of Scholastic Aptitude Test (SAT) scores based on the highest…
A: Introduction: Denote μ1, μ2 are the population mean SAT math scores of students whose parents are…
Q: In a recent survey of 100 users of a certain social media website, 29 said they thought website…
A: n = 100x = 29SEp^ = ?
Q: In order to estimate the proportion of students at a small liberal arts college who watch reality TV…
A: Bias: Bias is the unfairness of an experiment. It is the factor that makes the result of the final…
Of a random sample of 69 health insurance firms, 47 did public relations in-house, as did 40 of an independent random sample of 69 casualty insurance firms. Find and interpret the p-value of a test of equality of the population proportions against a two-sided alternative.
![](/static/compass_v2/shared-icons/check-mark.png)
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
- The College Board provided comparisons of Scholastic Aptitude Test (SAT) scores based on the highest level of education attained by the test taker's parents. A research hypothesis was that students whose parents had attained a higher level of education would on average score higher on the SAT. The overall mean SAT math score was 514. SAT math scores for independent samples of students follow. The first sample shows the SAT math test scores for students whose parents are college graduates with a bachelor's degree. The second sample shows the SAT math test scores for students whose parents are high school graduates but do not have a college degree. High School Grads College Grads 501 487 550 634 538 550 572 497 533 526 394 531 594 432 608 485 442 580 479 486 528 524 492 478 425 485 390 535According to the Humane Society, 33% of households in the United States own at least one cat. You are interested in determining whether the proportion of households of the students at your school that own at least one cat is different from the national proportion. Suppose you survey an SRS of students at your school and find that 25% of them own cats, which yields a p-value of .092. Interpret this p-value.A recent drug survey showed an increase in the use of drugs and alcohol among local high school seniors as compared to the national percent. Suppose that a survey of 100 local seniors and 100 national seniors is conducted to see if the proportion of drug and alcohol use is higher locally than nationally. Locally, 66 seniors reported using drugs or alcohol within the past month, while 62 national seniors reported using them. Conduct a hypothesis test at the 5% level. State the distribution to use for the test. What is the p-value?
- Among a simple random sample of 331 American adults who do not have a four-year college degree and are not currently enrolled in school, 159 said they decided not to go to college because they could not afford school. A. Calculate the test statistic and the p-value. B. State the conclusion in context.A political scientist claims that 38% of first-year college students characterize themselves as being “moderate” or “middle of the road” as far as their political affiliation is concerned. Believing this claimed value is too high, you survey a random sample of 400 first-year college students and find that 120 characterize themselves as being “moderate” or “middle of the road.” Based on this information, what will the test statistic be? Choose the answer below that is closest to what you calculate, and try not to do a lot of rounding until you get to the very end of your calculations. 1. -0.3 2. -1.2 3. -2.6 4. -3.3 5. None of the other answer options are correct because the test statistic should be positive, not negative.A survey of 1031 adults in a college asked whether they liked chocolate or strawberry ice cream more. Of those surveyed, 536 said they prefer chocolate. Determine and interpret the sample proportion. At the 5% significance level, does the data provide sufficient evidence to conclude that a majority of students in the college prefer chocolate ice cream?
- Among college students, the proportion p who say they’re interested in their congressional district’s election results has traditionally been 75% . After a series of debates on campuses, a political scientist claims that the proportion of college students who say they’re interested in their district’s election results is more than 75% . A poll is commissioned, and 207 out of a random sample of 275 college students say they’re interested in their district’s election results. Is there enough evidence to support the political scientist's claim at the 0.01 level of significance? Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.) (a) State the null hypothesis H0 and the alternative hypothesis H1 . H0: H1: (b) Determine the type of test statistic to use. ▼(Choose one) (c) Find the value of the test statistic. (Round…GMU uses a robot food delivery service which now has been utilized in the City of Fairfax. One of the potential benefits of this service is to help the busiest students eat breakfast. Research has shown that about 80% of college students skip breakfast due to busy schedules and other reasons. Initial data were collected from a random sample of 595 Mason students who utilize the robot food delivery service and are presented in StatCrunch. Show the full calculation of the sample proportion by including the number of students who skipped breakfast, the total number of students sampled, and the value of the sample proportion. Present this sample proportion as a decimal rounded to four decimal places. Frequency table results for Breakfast?Count = 595 Breakfast? Frequency Relative Frequency 0 142 0.23865546 1 453 0.76134454In a survey of 420 baseball fans, 335 of them favor testing ball players for preformance enhancing drugs. Determine the sample proportion, p, that favor these test
- Separate random samples were collected by a polling agency to investigate the difference in employee satisfaction at non-profit organizations and at for-profit companies. Data collected from 424 employees at non-profit organizations revealed that 373 of them were "highly satisfied." From the for-profit companies, 433 out of 524 employees reported the same level of satisfaction. Researchers want to test if the proportions of satisfied employees are the same at for-profit companies as at non-profit companies. Complete parts a through c below. a) What is the difference in the proportions of the two types of companies? Assume p, is the proportion of satisfied non-profit employees and p, is the proportion satisfied for-profit employees. The difference in the sample proportions, p, -P2, is (Round to three decimal places as needed.) b) What is the value of the Z-statistic? Write the appropriate hypotheses. Let p, be the proportion of satisfied employees from non-profit organizations. Let p,…Last year, 41% of business owners gave a holiday gift to their employees. A survey of business owners conducted this year indicates that 32% planned to provide a holiday gift to their employees. Suppose the survey results are based on a sample of 55 business owners. Suppose the business owners in the sample do as they plan. Conduct a hypothesis test that can be used to determine whether the proportion of business owners providing holiday gifts had decreased from last year. State the hypotheses.
![A First Course in Probability (10th Edition)](https://www.bartleby.com/isbn_cover_images/9780134753119/9780134753119_smallCoverImage.gif)
![A First Course in Probability](https://www.bartleby.com/isbn_cover_images/9780321794772/9780321794772_smallCoverImage.gif)
![A First Course in Probability (10th Edition)](https://www.bartleby.com/isbn_cover_images/9780134753119/9780134753119_smallCoverImage.gif)
![A First Course in Probability](https://www.bartleby.com/isbn_cover_images/9780321794772/9780321794772_smallCoverImage.gif)