A survey of 526 adults aged 18-24 year olds was conducted in which they wereasked what they did last Friday night. It found:• 152 watched TV• 180 hung out with friends• 193 ate pizza• 45 watched TV and ate pizza, but did not hang out with friends• 31 watched TV and hung out with friends, but did not eat pizza• 29 hung out with friends and ate pizza, but did not watch TV• 42 watched TV, hung out with friends, and ate pizzaHow may 18-24 year olds did not do any of these three activities last Friday night?

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Answered: A survey of 526 adults aged 18-24 year…

Algebra and Trigonometry (6th Edition)

6th Edition

ISBN:9780134463216

Author:Robert F. Blitzer

Publisher:Robert F. Blitzer

ChapterP: Prerequisites: Fundamental Concepts Of Algebra

Section: Chapter Questions

Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...

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A survey of 546 adults aged 18-24 year olds was conducted in which they were asked what they did last Friday night. It found: 183 watched TV 163 hung out with friends 46 watched TV and ate pizza, but did not hang out with friends 35 watched TV and hung out with friends, but did not eat pizza 45 hung out with friends and ate pizza, but did not watch TV 41 watched TV, hung out with friends, and ate pizza 67 did not do any of these three activities How may 18-24 year olds (of these three activities) only ate pizza last Friday night?
A survey of 523 adults aged 18-24 year olds was conducted in which they were asked what they did last Friday night. It found: 160 watched TV 178 hung out with friends 190 ate pizza 25 watched TV and ate pizza, but did not hang out with friends 40 watched TV and hung out with friends, but did not eat pizza 42 hung out with friends and ate pizza, but did not watch TV 26 watched TV, hung out with friends, and ate pizza How may 18-24 year olds did not do any of these three activities last Friday night?
Of 1,050 randomly selected adults, 360 identified themselves as manual laborers, 280 identified themselves as non-manual wage earners, 250 identified themselves as midlevel managers, and 160 identified themselves as executives. In the survey, 82% of manual laborers preferred trucks, 62% of non-manual wage earners preferred trucks, 54% of mid-level managers preferred trucks, and 26% of executives preferred trucks. Which distribution should you use for this problem?
A skin patch contains a new drug to help people quit smoking. A group of 75 cigarette smokers have volunteered as subjects to test the new skin patch. For one month, 40 of the volunteers receive skin patches with the new drug. The other volunteers receive skin patches with no drugs. At the end of the two months, each subject is surveyed regarding his or her current smoking habits. (Select all that apply.) a) No placebo is being used.b) Then record the smoking habits of all volunteers to see if a difference exists between the two groups.c) Then record the smoking habits of the 40 volunteers to see if a difference exists between the two groups.d) Use random selection to pick 40 volunteers for the skin patch with the drug.e) Use random selection to pick 35 volunteers for the skin patch with the drug.f) A placebo patch is used for the remaining 35 volunteers in the second group.g) Then record the smoking habits of the 35 volunteers to see if a difference exists between the two groups.
Your group is expected to interview at least 40 random persons about their preference for shopping online and whether they would be interested in such services. Record the following for each respondent: Age Gender Whether they go shopping at the supermarket/pharmacy. How many times they shop at the supermarket/pharmacy per month. Would they be interested in purchasing items from the supermarket/pharmacy online or through a mobile application? Would they be willing to pay a subscription fee to utilize this service? If yes what is the maximum fee that they would be willing to pay. The amount of money they are willing to pay to have the goods delivered to them. In the absence of a subscription fee or delivery fee, would they be willing to pay a marginally higher price for the good purchased online? If yes, what percentage would be reasonable [group in the following way: less than 1% higher, 1% - 5% higher, over 5% higher] Respondent Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 1 28 F YES 3 NO NO $5…
Phone service According to estimates from the federalgovernment’s 2010 National Health Interview Survey,based on face-to-face interviews in 16,676 households,approximately 63.6% of U.S. adults have both a landlinein their residence and a cell phone, 25.4% have only cell phone service but no landline, and 1.8% have no tele-phone service at all. a) Polling agencies won’t phone cell phone numbersbecause customers object to paying for such calls.What proportion of U.S. households can be reached bya landline call?b) Are having a cell phone and having a landlineindependent? Explain.
2. A political scientist developed a test designed to measure the degree of awareness of current events. She wants to estimate the average score that would be achieved on this test by all students in a certain high school. The administration at the school will not allow the experimenter to randomly select students out of classes in session, but it will allow her to interrupt a small number of classes for the purpose of giving the test to every member of the class. Thus, the experimenter selects 25 classes at random from the 108 classes in session at a particular hour. The test is given to each member of the sampled classes, with results as shown in the accompanying table. Number of students, mi Total score, yi Class 1 31 1590 2 29 1510 3 25 1490 4 35 1610 5 15 800 6 31 1720
b) A certain pay television company wishes to estimate the proportion of its customers who would purchase a pay television program guide. To do this, the company manager decides to select a random sample of customers and note the number who would purchase a program guide. Suppose that experience in other areas suggests that about 13% of customers will purchase a program guide. How many customers should the company manager include in his sample if he wishes to estimate the true proportion who will purchase the program guide correct to within 5% (0.05) with a confidence level of 95%?
A survey of 519 adults aged 18-24 year olds was conducted in which they were asked what they did last Friday night. It found: 180 watched TV 164 hung out with friends 189 ate pizza 47 watched TV and ate pizza, but did not hang out with friends 30 watched TV and hung out with friends, but did not eat pizza 39 hung out with friends and ate pizza, but did not watch TV 43 watched TV, hung out with friends, and ate pizza How may 18-24 year olds did not do any of these three activities last Friday night?
Sierra College students enrolled in an online Elementary Statistics course were asked to participate in an anonymous onlne survey. The survey asked the students "Which type of device will you primarily use to access your online course in Canvas?". Of the 152 students who answered this question, 20 responded "a desktop computer", 121 responded "a laptop computer", 6 responded "a smartphone", and 5 responded "a tablet". The Sierra College Mathematics Department believes that less than 5% of students enrolled in an online Elementary Statistics course primarily uses a smartphone to access their online course in Canvas. Use the data collected in the survey to conduct a hypothesis testing procedure to test this belief. What conclusion should be reached according to the results of this hypothesis test?

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