Jen is planning a vacation. To help her choose a hotel, she looks at some reviews. The table shows the number of positive reviews and the total number of reviews for each of four hotels. Number of Total number of positive reviews reviews Hotel A 20 29 Hotel B 57 61 Hotel C 43 48 Hotel D 60 75
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- A small insurance company is known for providing automobile insurance but also provides homeowner's insurance and life insurance. Jocelyn is one of the agents for the company. She reviews the data for its customers who have automobile insurance and whether they also have homeowner's insurance and life insurance with the company. The results of the data are shown in the accompanying table. Has Life Insurance Does Not Have Life Insurance Total Has Homeowner's Insurance 796 109 905 Does Not Have Homeowner's Insurance 154 698 852 Total 950 807 1,757 Jocelyn says that there is no association between whether an automobile insurance customer has homeowner's insurance or life insurance with the company. Determine whether Jocelyn is correct and, if not, correct her statement.At a popular vacation spot in Arizona, the Arizona Tourism Board took a survey of 100 people to determine the amount of people that were from Arizona and the amount of people that used a car to get to the vacation spot. The results are shown in the two-way table below. What is the percentage of people that participated in the survey who are from Arizona or who used a car to get to the vacation spot?The local government is concerned with the population of a new predatory fish, the tiger gar, which was first observed in Lake Richmond about 5 years ago. The following table shows the approximate number of tiger gars living in the lake since 2016: 2016 2017 2018 2019 2020 2021 340 410 487 585 710 846 If the population continues unchecked, how many tiger gar would be living in the lake in 2023? (Round to the nearest hundredth) Thanks
- To help consumers in purchasing a laptop computer, Consumer Reports calculates an overall test score for each computer tested based upon rating factors such as ergonomics, portability, performance, display, and battery life. Higher overall scores indicate better test results. The following data show the average retail price and the overall score for ten 13- inch models (Consumer Reports website, October 25, 2012). Brand & Model Price ($) Overall Score Samsung Ultrabook NP900X3C-A01US 1250 83 Apple MacBook Air MC965LL/A 1300 83 Apple MacBook Air MD231LL/A 1200 82 HP ENVY 13-2050nr Spectre XT 950 79 Sony VAIO SVS13112FXB 800 77 Acer Aspire S5-391-9880 Ultrabook 1200 74 Apple MacBook Pro MD101LL/A 1200 74 Apple MacBook Pro MD313LL/A 1000 73 Dell Inspiron I13Z-6591SLV 700 67 Samsung NP535U3C-A01US 600 63 c. Use the Least Squares method to develop the estimated regression equation.…An investor bought common stock of Blackstone Company on several occasions at the following prices. Number of Shares Price per Share 100 $ 33 200 $ 33 400 $ 25 The average price per share at which the investor bought these shares of common stock was the closest to _____.In 2010, the U.S. Congress passed the historic health care reform bill that will provide some type of coverage for the 32 million Americans currently without health care insurance. Just how widespread is the lack of medical coverage? The media claim that the segments of the population most at risk for disease and thus needing healthcare are women, children, the elderly and the poor. The following tables were generated from the U.S. Census Bureau, Current Population Survey, Annual Social and Economic Supplement (2011). The tables report the number of uninsured (in thousands) by sex, by age, and by household income. Is being insured or not dependent on gender? Fill in the degrees of freedom and p-value in the output below and draw a clear conclusion indicating which gender is more at risk of not being insured if there is a significant difference.
- In 2010, the U.S. Congress passed the historic health care reform bill that will provide some type of coverage for the 32 million Americans currently without health care insurance. Just how widespread is the lack of medical coverage? The media claim that the segments of the population most at risk for disease and thus needing healthcare are women, children, the elderly and the poor. The following tables were generated from the U.S. Census Bureau, Current Population Survey, Annual Social and Economic Supplement (2011). The tables report the number of uninsured (in thousands) by sex, by age, and by household income Is being insured or not dependent on the age groups identified in the analysis? Fill in the degrees of freedom and p-value in the output below and draw a clear conclusion indicating which age-groups are more at risk of not being insured if there is a significant relationshipIn 2010, the U.S. Congress passed the historic health care reform bill that will provide some type of coverage for the 32 million Americans currently without health care insurance. Just how widespread is the lack of medical coverage? The media claim that the segments of the population most at risk for disease and thus needing healthcare are women, children, the elderly and the poor. The following tables were generated from the U.S. Census Bureau, Current Population Survey, Annual Social and Economic Supplement (2011). The tables report the number of uninsured (in thousands) by sex, by age, and by household income Is being insured or not dependent on the income groups identified in the analysis? Fill in the degrees of freedom and p-value in the output below and draw a clear conclusion indicating which income-groups are more at risk of not being insured if there is a significant relationship.In an agricultural experiment, the effects of two fertilizers on the production of limes were measured. Fourteen randomly selected plots of land were treated with a brand new fertilizer, and 18 randomly selected plots were treated with an old fertlizer. The number of pounds of harvested limes were measured from each plot. The results are given below. (Round answers to two decimal places.)New Fertilizer to left Old Fertilizer to Right 498 429 485 428 469 427 481 421 472 412 475 419 488 431 468 436 460 415 469 428 475 417 471 437 476 437 470 420 416 426 427 419 Find a 99% confidence interval for the difference between the mean weight of the harvested limes.margin of error: lower limit: upper limit
- Jerri collects data from 100 people about how much mileage they put on their vehicle eachweek. She’s interested in how age affects driving habits, so he divides the sample into twogroups: people under 40 and people 40 or over. What type of t-test should Jerri use to makethis comparison?The proportion of commuters on PSU – Berks campus is purported to be 65%. A professor believes this to be inaccurate. He randomly selects 300 students on campus and determines 200 of them to be commuters. Can the professor reject the campus claim of 65%?-Solve for D5 and P10 of the given set of grouped data. 78, 112, 136, 224, 368, 389, 456, 540, 566, 629, 675, 711, 730, 804, 817
