A random sample of 1000 people was chosen for a survey. 80% of them had health insurance. Find the 95% confidence interval. Round answers to 4 significant digits.

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  1. Math Help Please? c: Thank you :3

    At your summer job with a research company, you must get a random sample of people from your town to answer a question about spending habits. Which of the following methods is most likely to be random? A) You survey customers at the local shopping mall. B)

  2. Mathematics

    1.​At your summer job with a research company, you must get a random sample of people from your town to answer a question about spending habits. Which of the following methods is most likely to be random? a. You survey customers at the local shopping

  3. Math for Ms. Sue please last questions

    2. In a school of 464 students, 89 students are in the band, 215 students are on sports teams, and 31 students participate in both activities. How many students are involved in neither band nor sports? (1 point) 160 students 191 students 249 students 433

  4. Mathematics

    Jon is working on a city councilperson’s election campaign. He wants to survey potential voters about their opinions. Which is the best way for him to gather a sample? Attend a speech given by the councilman and survey audience members. Select every 10th

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    A national caterer determined that 87% of the people who sampled their food said that it was delicious. A random sample of 144 people is obtained from a population of 5000. The 144 people are asked to sample the caterer's food. If sample proportion, P^, is

  6. Math

    In a marketing survey involving 1,000 randomly chosen people, it is found that 630 use brand P, 420 use brand Q, and 210 use both brands. How many people in the survey use brand P and not brand Q? Answer choices: 210 people 420 people 630 people none of

  7. Math

    There are 3,000 people at a concert. You survey a random sample of 200 people and find that for 35 of them this is the first concert they have ever attended. Estimate how many people are attending their first concert that night.

  8. statistics

    A committee of three people is to be formed. The three people will be selected from a list of five possible committee members. A simple random sample of three people is taken, without replacement, from the group of five people. Using the letters A, B, C,

  9. Statistics

    In a study by Peter D. Hart Research Associates for the Nasdaq Stock Market, it was determined that 20% of all stock investors are retired people. In addition, 40% of all adults invest in mutual funds. Suppose a random sample of 25 stock investors is

  10. math

    plz check my answers (and tell me what the answers are to the ones i get wrong or at least give me a clue t0 what the right answer is) According to the survey described here, what was the sample of the survey? “A recent telephone survey of 900 teenagers

  11. Math Please Help Me

    1. At your summer job with a research company, you must get a random sample of people from your town to answer a question about spending habits. Which of the following methods is most likely to be random? You survey customers at the local shopping mall.

  12. Statistics

    Data in 1980 showed that about 48% of the adult population had never smoked cigarettes. In 2004, a national health survey interviewed a random sample of 5000 adults and found that 54% had never been smokers. Create a 95% confidence interval for the

  13. Math

    a number between 1000 and 9999, inclusive, is chosen at random. what is the probability that it contains a)no 9's? b) at least one 9?

  14. statistics

    Let the random variable X represent the number of people living in a household in a certain town. The standard deviation of X is 1.8. Which of the following statements is the best interpretation of the standard deviation? A.The number of people living in a

  15. Statistics Emergency please

    People end up tossing 12% of what they buy at the grocery store (Reader's Digest, March 2009). Assume this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior. a)What is

  16. Math

    A researcher conducted a survey and found that people who took vitamin C every day had fewer colds than people who did not take vitamin C every day. The researcher wrote a paper stating that vitamin C prevents colds, using this data as evidence. What is

  17. Math

    At your summer with a research company, you must get a random sample of people from your town to answer a question about spending habits. Which of the following Methods is most likely to be random? a)You survey customers at the local shopping mall b)You

  18. Math

    A marketing research firm wishes to determine if the residents of Caldwell, Idaho, would be interested in a new downtown restaurant. The firm selects a simple random sample of 120 phone numbers from the Caldwell phone book and calls each household. Only 62

  19. math

    The number of years of education of self-employed individuals in the United States has a population mean of 13.6 years and a population standard deviation of 3.0 years. If we survey a random sample of 100 self-employed people to determine the average

  20. Survey Math help

    A movie complex has eight different movie theaters. The manager of the complex wants to conduct a survey to determine which snacks to add to the menu. Which represents the best sample the manager could use for the survey? Would I do specific ages the first

  21. marketing

    Binomial probability distributions are used in business, science, engineering, and other fields. Suppose you work for a marketing agency and have to create a television ad for Brand A toothpaste. The toothpaste manufacturer claims that 40% of the

  22. Statistics

    A state survey investigates whether the proportion of 8% for employees who commute by car to work is higher than it was five years ago. A test on employee commuting by car was done on a random sample size of 1000 and found 100 commuters by car. Test an

  23. Statistics

    The U.S. Department of Labor and Statistics released the current unemployment rate of 5.3% for the month in the U.S. and claims the unemployment has not changed in the last two months. However, the states statistics reveal that there is a decrease in the

  24. Math

    Carol wanted to know about how much time students in her school spent surfing the Internet. So she asked 15 of her friends to complete a survey that she had prepared. Will the results of Carol’s survey represent the population of students in her school

  25. Statistics

    A marketing research firm wishes to determine if the residents of Caldwell, Idaho, would be interested in a new downtown restaurant. The firm selects a simple random sample of 120 phone numbers from the Caldwell phone book and calls each household. Only 62

  26. Algebra 2 Probability

    There are 10 cards. Each card has one number between 1 and 10, so that every number from 1 to 10 appears once. In which distributions does the variable X have a binomial distribution? When a card is chosen at random with replacement six times, X is the

  27. statistics

    Based on data collected by the National Center for Health Statistics and made available to the public in the Sample Adult database, an estimate of the percentage of adults who have at some point in their life been told they have hypertension is 23.53

  28. Mathematics

    According to the survey described here, what was the sample of the survey? “A recent telephone survey of 900 teenagers aged 16 to 19 from across the state shows 1 out of 4 of them drive themselves to school.” ANSWER: B Mrs. Williams wants to determine

  29. Calculus

    According to the National Health Survey, the heights of adult males in the United States are normally distributed with mean 69.0 inches and standard deviation 2.8 inches. A. What is the probability that an adult male chosen at random is between 61 inches

  30. statistics

    The director of a health club conducted a survey and found that 23% of memebers used only the pool for workouts. Based on this information, what is the probablity that for a random sample of 10 members, 4 used only the pool for workouts? Please show work

  31. statistics

    A doctor wants to know if her patients are happy with her. She decides to survey a sample of her clients. What method would be best for choosing a random sample that is a fair representation of her patients? A. Assign numbers to each patient and then use a

  32. Mathematics

    A recent survey suggested that the proportion of 15-years old girls who never consider their health when deciding what to eat is 0.1 Assuming that this figure is accurate, what is probability that in a random sample of thirty 15 years old girls the number

  33. venn diagram

    In a marketing survey involving 1,000 randomly chosen people, it is found that 630 use brand P, 420 use brand Q, and 210 use both brands. How many people in the survey use brand P and not brand Q? dont tell me the answer just tell me how to do it

  34. Math

    The results of a survey asking 100 people how they get their news. 15 From newspapers; 25 From television; 40 From both newspapers & Television and 20 from no sources; ------------------------- What is the probability that a person selected at random from

  35. Algebra 1

    A city planning committee surveys 100 people waiting at a bus stop about the expansion of the public transportation system. Is this an example of a: random sample, systematic sample, self-selected sample, convenience sample, bipartisan sample, or

  36. Algebra 1

    Can you please check my work? A city planning committee surveys 100 people waiting at a bus stop about the expansion of the public transportation system. Is this an example of a: random sample, systematic sample, self-selected sample, convenience sample,

  37. Math

    In a marketing survey involving 1,000 randomly chosen people, it is found that 630 use brand P, 420 use brand Q, and 210 use both brands. How many people in the survey use brand P and not brand Q? Answer choices: 210 people 420 people 630 people none of

  38. statistics

    People end up tossing 12% of what they buy at the grocery store (Reader's Digest, March 2009). Assume this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior. a.Show the

  39. statistics

    (1) The director of a health club conducted a survey and found that 23% of members used only the pool for workouts. Based on this information, what is the probability that for a random sample of 10 members, 4 used only the pool for workouts? Round your

  40. Statisitics

    Identify the population, and the sample in each of the following: A small college has 275 tenured full and associate professors. Twenty professors are randomly chosen to take part in a survey about the incorporation of technology into their teaching

  41. Lincoln College Of New En

    A survey by Men’s Health magazine stated that 14% of men said they used exercise to reduce stress. Use a = 0.10. a random sample of 100 men was selected and 10 said that they used exercise to relieve stress. Use the P –value method to test the claim.

  42. Math

    A survey of 1000 registered voters revealed that 450 people would vote for candidate A in an upcoming election. If 220,000 people vote in the election, how many votes would the survey takers predict candidate A should receive? A. 44,500 B. 48,900 C. 95,000

  43. Statistics

    I am respectfully requesting help with the following assignment. I am struggling in this chapter of statistics... Define the term sample? A) A sample is a numeric characteristic of a sample B) A sample is a numeric characteristic of a population C) A

  44. MATH URGENT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

    Tara is researching the stork population living in a bird reserve. On her first day, she captures and tags 37 birds. Two weeks later, she captures 48 birds and finds that 30 are not tagged. Estimate the actual number of storks in the bird reserve. 27. In a

  45. algebra

    55% of the people in a town have brown eyes. you choose a random sample of 200 people to survey regarding their eye color. What is the mean and standard deviation of the proportion of people in your sample that have brown eyes?

  46. math

    I was given a table that showed a simple random sample of adults' age and annual income living in suburb of a large city. a) What is the probability that a person chosen at random from those in this sample will be the 31-45 age category? The answer I got

  47. mathematics

    Suppose that on the average 1 person in every 1000 is an addict. Find the probability that a random sample of 8000 people will yield fewer than 7 addicts.

  48. statistics

    Suppose that 30% of the nation's TV viewers are watching a particular presidential press conference. Typically, a Nielsen survey will sample about 1000 viewers. Suppose random sampling. What is the probability that at most 28% of the viewers in the sample

  49. statistics

    People end up tossing 12% of what they buy at the grocery store (Reader's Digest, March 2009). Assume this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior. a. Show

  50. math - classifying events

    A market survey has estimate that the probability of a household's subscribing to the following magazines is: Reader's Digest - 0.6 Chatelaine - 0.5 Maclean's - 0.4 Reader's Digest and Chatelaine - 0.2 Reader's Digest and Maclean's - 0.2 Chatelaine and

  51. Statistics

    “How would you describe your own physical health at this time? Would you say physical health is—excellent, good, only fair, or poor?” The Gallup Poll asked this question of 1005 randomly selected adults, of whom 29% said “excellent.” Suppose that

  52. 12 math

    there are 8 opposite sex married couples at a party. two people are chosen at random to win a door prize. A. what is the probability that the 2 people will be married to each other? B. what is the probability that the 2 people will be same sex? C. if 6

  53. statistics

    Based on data collected by the National Center for Health Statistics and made available to the public in the Sample Adult database, an estimate of the percentage of adults who have at some point in their life been told they have hypertension is 23.53

  54. algebra

    a random sample of 1000 people was chosen for a survey. 80% of them had health insurance. Find the 95% confidence interval

  55. Algebra 2

    A random sample of 1000 people was chosen for a survey. 80% of them had health insurance. Find the 95% confidence interval. Round answers to 4 significant digits.

  56. math,probability

    I only need someone to check my answers for two questions. 1) In a survey of 1000 people about emergency living expense savings .... the following results were retained (basically the number of months the person could live on savings): Group 1 2 3 4 Time

  57. Math

    A toothpaste company did a survey at the mall. They found that 42.5% of those surveyed brushed their teeth twice a day. Which random numbers would you generate on a computer spreadsheet to simulate the survey? a. random integers from 425 to 1000 b. random

  58. Math

    You want to determine the average number of songs people keep on their MP3 players. You want to collect data from a random sample of at least 300. Which of these would be the most valid method of collecting data? a. Survey students coming in and out of

  59. math

    you plan to survey people to see what percent own their home and what percent rent. tell whether the following will give a random sample. justify ur answer. a you interview people outside a pool supply sotre in the suburbs. b you interview people in the

  60. Algebra 2

    A random sample of 5000 people was chosen for a survey. 54% of them said they didn't have children under 18 living at home. Find the 95% confidence interval. Round answer to 4 significant digits and give lowest and highest values of confidence Interval. I

  61. STATISTIC

    A survey of Internet users reported that 21% downloaded music onto their computers. The filing of lawsuits by the recording industry may be a reason why this percent has decreased from the estimate of 31% from a survey taken two years before. Suppose we

  62. Statistics

    According to one survey, the mean serum cholesterol level for U.S. adults was 195.1, with a standard deviation of 41.5. A simple random sample of 95 adults is chosen. Find the 46 percentile for the sample mean. Write only a number as your answer. Round to

  63. math, probability

    In a survey of 1000 social media account holders, the following question was asked: how many social media accounts do you have? The results are summarized below: Answer 1-2 3-4 5 or more Respondents 650 200 150 b) What is the probability that a participant

  64. Math

    Need help on if the sample given is random or not random. The first 50 nurses at a nursing convention write their names on slips of paper and place them in a drawing box. After the box is shaken, 20 names are pulled from the box and each person chosen

  65. Urgent =Math

    17. Tell whether this survey describes a good sample and if so, name the method of sampling used. Every sixth person leaving a restaurant is surveyed to determine their favorite food from the menu. yes, random******** yes, systematic yes, stratified not a

  66. Math

    There are 3,000 people at a concert. You survey a random sample of 200 people and find that for 35 of them this is the first concert they have ever attenede. Estimate how many total people are attending their first concert that night

  67. algebra 1

    Circle the most appropriate description. 27.A city planning commitee surveys 100 people waiting at a bus stop about the expansion of the public transportation system. Random Sample,systematic sample,self-selected sample, convenience sample, bipartisan

  68. statistics

    according to the health and exam survey (1999-2008)35.7% of u.s adults were consdered obese(body mass greater then30)if two people in the u.s are selected at random is the probability that both are obese

  69. college stats

    I am having a lot of trouble with these questions can anyone help me please. 2. On September 2, 2004, a Dan Jones poll based on a random sample of 408 Salt Lake County residents reported that 26% of the respondents thought that Mayor Nancy Workman should

  70. Algebra

    You want to determine the average number of songs people keep on their MP3 players. You want to collect data from a random sample of at least 300. Which of these would be the most valid method of collecting data? a. Survey students coming in and out of

  71. Mathematics

    The blood types B- and AB- are the rarest of the eight huan blood types representing 1.5% and .6% respectively. a) If the blood types of a random sample of 1000 blood donors are recorded, what is the probability that 10 or more will be AB-? b) If the blood

  72. Statistics

    City A has 1,000,000 people; City B has 4,000,000 people. Suppose the goal is to try to predict the percent of Purple Party voters in a sample. Other things being equal, a simple random sample of 1% of the people in City A has about the same accuracy as a

  73. Math

    you want to determine the average age when people got their driver's licence you want to collect data from a random sample of at least 400 people Which of these is most valid for collecting data? * Survey an equal number of students of driving age teachers

  74. statistics

    A pollster conducts a survey of a random sample of voters in a community to estimate the proportion who support a measure on public health insurance. Let P be the proportion of the population who support the measure. The pollster takes the sample of 200

  75. math

    (A) An architect estimates that the average height of the buildings of 30 or more stories in Suva is at least 500 feet. A random sample of 12 buildings is selected, and the heights in feet are shown. At =0.025, is there enough Evidence to reject the

  76. math

    (A) An architect estimates that the average height of the buildings of 30 or more stories in Suva is at least 500 feet. A random sample of 12 buildings is selected, and the heights in feet are shown. At =0.025, is there enough Evidence to reject the

  77. Math

    Charlotte wants to conduct a survey to find out if the people in her town think that the town should build a new library. Which group of people would be a representative sample to survey? A. parents with children in middle school B. every twenty-fifth name

  78. Math

    The percentage of people not covered by health care insurance in 2003 was 15.6% (Statistical Abstract of the United States, 2006). A congressional committee has been charged with conducting a sample survey to obtain more current information. a. What sample

  79. Statistics

    People end up tossing 12% of what they buy at the grocery store (Reader's Digest, March 2009). Assume this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior. a.Show the

  80. Math

    People end up tossing 12% of what they buy at the grocery store (Reader's Digest, March 2009). Assume this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior. a.Show the

  81. Math

    How can you classify the 2 examples that you gave in part c? Is it: Simple random sample Systematic random sample Voluntary response sample Convenience sample Or Stratified random sample? Thank you.

  82. statistics

    A specific study found that the average number of doctor visits per year for people over 55 is 8 with a standard deviation of 2. Assume that the variable is normally distributed. 1. Identify the population mean. 2. Identify the population standard

  83. Statistics

    4 people are chosen at random from a group of 15 people. What are the odds that all 4 people chosen were the oldest people in the group?

  84. statistics & probability

    according to a survey, 30% of 18-25 year olds have blue eyes. In a random sample of 8 people in this age group what is the probability that exactly 0 have blue eyes?

  85. math

    1. You want to survey people about their favorite exercise. Which sample below is more likely to be random? (1 point)You ask people on a jogging track in a park to name their favorite exercise. You ask people on their lunch hour at a downtown intersection

  86. calculus

    A company is taking a survey to find out whether people like its product. Their last survey indicated that 70% of the population like the product. Based on that, of a sample of 58 people, find the probabilities of the following.

  87. math

    In a survey to determine the opinions of Americans on health insurers, 400 baby boomers and 600 pre-boomers were asked this question: Do you believe that insurers are very responsible for high health costs? Of the baby boomers, 232 answered in the

  88. math

    A survey by Men’s Health magazine stated that 40% of men said they used alcohol to reduce stress. At   0.10, test the claim that a random sample of 100 men was selected and 30 said that they used alcohol to reduce stress. Use the P-value method.

  89. statistics

    A specific study found that the average number of doctor visits per year for people over 55 is 8 with a standard deviation of 2. Assume that the variable is normally distributed. 1. Identify the population mean. The population mean is 8. 2. Identify the

  90. Stats

    In a simple random sample of 1000 people taken from City A, 13% are senior citizens. In an independent simple random sample of 600 people taken from City B, 17% are senior citizens. Is the percent of senior citizens different in the two cities? Or is this

  91. Statistics

    7. A random sample of n1 = 16 communities in western Kansas gave the following rates of hay fever per 1000 population for people under 25 years of age. 121 115 124 99 134 121 110 116 113 96 116 116 135 96 96 116 A random sample of n2 = 14 communities in

  92. maths

    A random sample of 4 pairs of twins will be chosen from the sample of 27. Let X be the number of twin pairs from the sample of 4 drawn whereby at least one twin in the pair has an IQ score greater than 88. Show that P(X = 2) = 0.23 to 2 d.p. Don't know

  93. statistics

    what is the percentage that 2 random people can be chosen from a total of 14 people.

  94. integrated math 1- please help!!!

    Among a group of people, 10% are from NYC and 90% are not. All people from NYC are under 18 years old, and 70% of those not from NYC are also under 18 years old. One person is chosen at random, and he or she is under 18. What is the probability that the

  95. conditional probability

    Among a group of people, 10% are from NYC and 90% are not. All people from NYC are under 18 years old, and 60% of those not from NYC are also under 18 years old. One person is chosen at random, and he or she is under 18. What is the probability that the

  96. math statistics

    IQ scores in the US population have an average of µ = 100 and a standard deviation of σ = 15. Suppose a researcher wanted to test whether socioeconomic status (SES) has an effect on IQ scores. The researcher takes a random sample of n = 100 people,

  97. Math

    Danielle wants to determine the median age of the 300 people attending a music festival. She selects 3 people at random and determines the median. What may be concluded about the results? A. The results are a good predictor of the median age of the

  98. statistics

    36 people surveyed at random and learned that 20 people are in favor of a new shopping mall. What is a good estimate that person chosen at random in her town would favor a new shopping mall.

  99. statistic

    1.The state highway patrol stops every 5th car on highway 210 to check drivers' licenses and registrations. Which sampling technique are they using? systematic sampling -chose this one convenience sampling cluster sampling simple random sampling stratified

  100. math,help

    a company is taking a survey to find out whether people like its product. Their last survey indicated that 70% of the population like the product. based on that, of a sample of 58 people, find the probability of the following. a) all 58 like the product.

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