A recent survey found that 63% of all adults over 50 wear glasses for driving. In a random sample of 80 adults over 50, what is the mean and standard deviation of those that wear glasses?

17,379 results
  1. Statistics

    A recent survey found that 70% of all adults over 50 wear glasses for driving. You randomly select 30 adults over 50, and ask if he or she wears glasses. Decide whether you can use the normal distribution to approximate the binomial distribution. If so,

  2. Statistics

    A recent survey found that 63% of all adults over 50 wear glasses for driving. In a random sample of 80 adults over 50, what is the mean and standard deviation of those that wear glasses?

  3. Statistics

    A recent survey found that 70% of all adults over 50 wear glasses for driving. You randomly select 30 adults over 50, and ask if he or she wears glasses. Decide whether you can use the normal distribution to approximate the binomial distribution. If so,

  4. Statistics

    A recent survey found that 72% of all adults over 50 wear glasses for driving. In a random sample of 100 adults over 50, what is the mean and standard deviation of the numbe who wear glasses?

  5. Elementary Statistics

    According to a survey, 35% of adults are against using animals for research. Assume that this result holds true for the current population of all adults. Let x be the number of adults who are against using animals for research in a random sample of two

  6. Statistics

    A CBS News/New York Times survey found that 97% of Americans believe that texting while driving should be outlawed (CBS News website, January 5, 2015). a. For a sample of 10 Americans, what is the probability that at least 8 say that they believe texting

  7. statistics

    According to a survey 35% of adults are against using animals for research. Assume that this result holds true for the current population of all adullts. Let X be the number of adults who are against using animals for research in a random sample of 2

  8. statistics

    A survey found 70% of adults over 50 wear glasses. In a random sample of 10 adults over 50, what is the probability that exactly six wear glasses and at least six wear glasses

  9. Statistics

    In the United States, 43% of people wear a seat belt while driving. If two people are chosen at random, what is the probability that both of them wear a seat belt?

  10. mathematics

    in a class of 60 boys and 40 girls, it is observed tha 24 boys and 21 girls wear glasses. what is the probability that: (1)A student is picked at random from this calss wear glasses (2)A girl picked at random does not wear glsses.(3)A boy pivked at random

  11. Math

    In rod's family 3/4 of members wear glases. Of those who do not wear glasses, 1/3are male. What fraction of the family are males who do not wear glasses?

  12. English

    On p. 17, symmetry could best be replaced with A. fairness B. cruelty*** C. balance D. kindness The story is called 'Harrison Bergeron' and if you want just read the ending on pg 17 to under stand the story better I think it is cruelty (B) because they

  13. Math

    In a class, 2/7 of the pupils are girls. 1/2 of the girls and 1/3 of the boys in the class wear glasses. If 10 boys wear glasses, how many of the girls wear glasses?

  14. statistics

    As a manager for an advertising company, you must plan a campaign designed to increase Twitter usage. A recent survey suggests that 85% of adults know what Twitter is. How many adults should you survey in order to be 90% confident that your estimate is

  15. Statistics

    In an elementary school, 25% of children wear glasses. Suppose that a random sample of 64 children is selected. Find the mean number of children in the sample who wear glasses. Round your answer to the nearest integer.

  16. Math

    In a class of 40 children, 16 of them wear glasses. What fraction of the children wear glasses?

  17. Math

    A class is made up of 10 boys and 2 girls. Half of the boys wear glasses. A student is selected at random from the class. What is the probability that the student is a boy with glasses? My Question is, I don't know how to do Probability.

  18. 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

  19. Elementary Stats

    A recent survey found that 70% of all adults over 50 wear glasses for driving. In a random sample of 10 adults over 50, what is the probability that exactly eight wear glasses?

  20. Mathematics

    8 out of 20 students in a class wear glasses what is the random possibility that a student selected at random does not wear glasses?

  21. mathematic

    In a class of 30 pupils, 15% wear glasses, how many wear glasses?

  22. Maths

    There are 36 pupils in a class. Each girl is given 8 books and each boy is given 3 books. The total number of books the girls receive is 46 more than the total number of books the boys receive. How many girls are there in the class? The ratio of the number

  23. Terminology

    Identify the population of interest and sample in the following statement. A survey of 1000 adults in the United States found that 12% prefer to take their vacation during the winter months

  24. statistics

    A manufacturing company produces 10,000 plastic glasses per week. This company supplies plastic glasses to another company, which packages the glasses as part of picnic sets. The second company randomly samples 10 glasses from the supplier. If at least

  25. Math

    A recent survey found that 70% of all adults over 50 wear glasses for driving. In a random sample of 10 adults over 50, what is the probability that exactly eight wear glasses?

  26. Math

    In a class, 2/5 of the boys wear glasses and 1/3 of the girls wear glasses. What fraction of the class wear glasses?

  27. Math

    Five out of twenty students wear glasses what is the probability that a student selected at random does not wear glasses

  28. Math

    In a class of 20 students, 40% are boys. Twenty-five percent of the boys and 50% of the girls wear glasses. How many students wear glasses?

  29. math

    There are 24 students in a class. If 1/4 students wear glasses. How many students do not wear glasses? I multiply 24(1/4)=6 so 24-6=18 so is 18 students correct?

  30. Math

    2/5 of the 40 students in class are girls. 1/4 of the girls wear glasses. How many girls do not wear glasses?

  31. statistics

    Us travel data center survey of 1500 adults found that 42% of respondents stated that they favor historical sites. Find the 95% confidence interval of the true proportion of all adults who favor visiting historical sites.

  32. 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

  33. math

    At a concert there are 3 times as many women as men. 3/5 of the men and 1/3 of the women wear glasses. There are 120 more women wearing glasses than men wearing glasses .How many people are at the concert?

  34. Alan

    Mark below all of the statments that correctly describe the physical properties of glass. Glasses do not have slip systems. Glasses consist of both covalent and ionic bonding. Glasses are brittle at room temperature. Glasses are amorphous and have no long

  35. chemistry

    Please mark below all of the statments that correctly describe the physical properties of glass. a)Glasses do not have slip systems. b)Glasses consist of both covalent and ionic bonding. c)Glasses are brittle at room temperature. d)Glasses are amorphous

  36. english

    What should you do to the following sentence to avoid using a double negative? Even with glasses on, she didn't never see well. A. Leave the sentence as is. B. Even with glasses on, sue didn't ever see well. C. Even with glasses on, she never saw nothing

  37. Mathematics

    In a class of 20pupils, 10percent wear glasses. How many pupils wear glasses

  38. Statistics

    In an elementary school, 25% of children wear glasses. Suppose that a random sample of 64 children is selected. Find the mean number of children in the sample who wear glasses. Round your answer to the nearest integer.

  39. Statistics

    In an elementary school, 25% of children wear glasses. Suppose that a random sample of 64 children is selected. Find the mean number of children in the sample who wear glasses. Round your answer to the nearest integer.

  40. Statistics

    In an elementary school, 25% of children wear glasses. Suppose that a random sample of 64 children is selected. Find the mean number of children in the sample who wear glasses. Round your answer to the nearest integer.

  41. Math2(Please Help)

    There were approximately 28 million adults on Canada when a survey was conducted. In an online survey, 1008 Canadians took part. 68% said that the penny should be abolished. If the margin of error was +- 3.1%, give an upper and lower estimate for the

  42. Statistics

    According to a survey 35% of adults are against using animals for research assume that this result holds true for the current population of all adults let XP the number of adults who are against using animals for research in a random sample of two adults

  43. math

    Explain why each survey question might lead to an erroneous conclusion 20. In a recent article, the author states that 71% of adults do not use sunscreen. Although 71% is a large percentage, explain why it could be misleading.

  44. Statistics

    A US travel data center survey of 1500 adults found that 42% of the respondents stated that they favor historical sites as vacations find the 95% confidence interval of the troop portion of all adults who favor historical sites as vacation

  45. statistics

    A survey of adults found that 35% say that their favorite sport is professional football. You randomly select 120 adults and ask them if their favorite sport is professional football. Find the probability that more than 30 people answer yes.

  46. math

    In Ms Smith's class, 20% of the girls wear glasses and 15% of these girls have red hair. If one girl is selected at randon from Ms Smith's class, what is the probability the girl will have red hair and wear glasses?

  47. math help

    A survey was done recently by the Royal Bank with Ipsos Reid (reported in Globe and Mail Aug 16 2010) about financial issues that university students face. (Data used here is based on that survey, but randomized to be still within the margin of error of

  48. stats

    A survey was done recently by the Royal Bank with Ipsos Reid (reported in Globe and Mail Aug 16 2010) about financial issues that university students face. (Data used here is based on that survey, but randomized to be still within the margin of error of

  49. solving algebraic equation

    a movie theater charges $9 for an adults ticket and $5.00 for a child ticket. on a recent night the sale of child's tickets was two times the sale of an adults tickets. if the total amount collected for ticket sales was not more than $3800 what is the

  50. Statistics

    . A 2003 Harris Poll of 993 randomly selected American adults found that 69% believed in capital punishment (death penalty). A sample size of 1010 American adults in 2000 found that 64% believed in capital punishment. Write the hypotheses for a

  51. maths

    in a class there are 50 students,15 girls wear glasses 8 do not wear glasses.20 boys don't wear glasses.how many students wore glasses

  52. Engish

    1. She must have been rich. 2. She cannot have been rich. 3. You should/ought to have come earlier. 4. He may have found the glasses. 5. He might have found the glasses. (They are all grammatical and talk about the past, right? By the way, what is the

  53. Statistics Math

    Pye and Associates recently conducted a survey to determine the percent of adult county residents who believe that students in public high schools should wear uniforms to school. The telephone poll of 325 adults found that 35% of the adults believe that

  54. math

    Suppose that the population of a certain townis made up of 45% of men and 55% of women. Of the men, 40% wear glasses, abd of the women, 20% wear glasses. Given that a person chosen at random from the town wears glasses, what is the probability that the

  55. statistics

    A new national survey found that Americans drink an average of 6 glasses of water daily, instead of the recommended 8. Assuming that the number of glasses of water is approximately normally distributed with a standard deviation of 1.7 glasses, what

  56. math

    A group of 50,000 randomly selected adults were survey about whether they drink at least 6 8-oz glasses of water each day. Only 35% said yes to the question.

  57. math

    In a third grade class 2/5 of the students wear glasses. What fraction of the students do not wear glasses? If 16 students wear glasses, how many students are in the class altogether?

  58. Stats

    In an elementary school, 29% of children wear glasses. Suppose that a random sample of 31 children is selected. Find the mean number of children in the sample who wear glasses. Round your answer to the nearest integer.

  59. Statistics

    In an elementary school, 25% of children wear glasses. Suppose that a random sample of 64 children is selected. Find the mean number of children in the sample who wear glasses. Round your answer to the nearest integer.

  60. Math

    In a company, the men who do not wear glasses are thrice as many as the men who do, while the women who do not wear glasses are ten more than the women who do. The probability that an employee wears glasses is 3/10. If selected employee wears glasses, the

  61. STATISTICS

    Suppose that, in order to estimate the proportion of students who wear glasses, a sample of 100 students was collected and showed that 20 of the students in the sample wore glasses. A confidence interval for the population proportion of students who wear

  62. math

    I need help finding the answer In the US about 46% of the population wear glasses or contact lenses. A sample of 85 people is taken. About how many people would you ecpect to wear glasses or contact lenses? Do I multiply .46 to 85?

  63. statistics

    Hello. I recently had this question on my Midterm "Suppose the number of students coming to Thomas’s Monday office hours follows a Poisson distribution with mean 5. Further suppose that 30% of these students wear glasses. What is the probability that for

  64. math

    In a sixth grade class,1/5 of the students wear glasses. There are 6O students in the class. how many of them wear glasses?

  65. Maths

    20 pupils,8 males, 3 males wear glasses whats the probability that the first student is mals and wears glasses?

  66. Please Help Me

    There were approximately 28 million adults on Canada when a survey was conducted. In an online survey, 1008 Canadians took part. 68% said that the penny should be abolished. If the margin of error was +- 3.1%, give an upper and lower estimate for the

  67. Ms. Sue please

    Please don't get mad, but I have no where else to turn to. This doesn't deal with school at all.. My eyes have gotten worse. I have to wait for my new glasses with a new prescription lens. What's your opinion? Do you think it Will help at all wearing my

  68. 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

  69. Statistics

    Looking for someone to verify my homework answers on identifying the sample and population...... 1) A group of 50,000 randomly selected adults were survey about whether they drink at least 6 - 8 oz glasses of water each day. Only 35% said yes to the

  70. Health ????

    This is going to be a odd question. My dad wears contacts most of the time. When he is not he will wear his glasses. He is nearsighted. What he wants to know is can he use the same prescrition for his contacts on his glasses. He does does not want to go to

  71. Maths

    Please help... The ratio of the number of boys to that of girls in Class A is 2 : 3. The ratio of the number of girls who wear glasses to the number of girls who do not wear glassesis 1:3. If there are 12 more girls than boys, how many girls wear glasses?

  72. English

    I left out the following sentences. Can you please check them, too? 1) “Congratulations for passing your driving test”, Peter said to me. He congratulated (me) on/for passing my driving test. 2) “I’m terribly sorry I dropped your glasses on the

  73. statistics

    1.A magazine reported that 6% of Americans read the news paper while driving. 100 drivers are selected at random, find the probability that exactly 25 of them say they read the newspaper while driving.(normal binomial formula to solve) 2. A survey of 30

  74. Statistics p-value

    Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey of 1026 adults by IBR Polls

  75. Math

    According to a recent study, 46% of all adults have back problems. If 7 adults are randomly sampled, what is the probability hat 0-7 of the adults have back problems?

  76. Statistics

    Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey of 1026 adults by IBR Polls

  77. Statistics

    Is the p-value to the below question 0.4995? Do you reject or fail to reject the null hypothesis? Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than

  78. Statistics

    Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey of 1026 adults by IBR Polls

  79. Chemisry

    Please mark below all of the statments that correctly describe the physical properties of glass: 1.Glasses do not have slip systems. 2.Glasses consist of both covalent and ionic bonding. 3.Glasses are brittle at room temperature. 4.Glasses are amorphous

  80. chemistry

    Please mark below all of the statments that correctly describe the physical properties of glass. Glasses do not have slip systems.Glasses consist of both covalent and ionic bonding.Glasses are brittle at room temperature.Glasses are amorphous and have no

  81. chemistry

    Please mark below all of the statments that correctly describe the physical properties of glass. Glasses do not have slip systems. Glasses consist of both covalent and ionic bonding. Glasses are brittle at room temperature. Glasses are amorphous and have

  82. statistics

    A manufacturing company produces 10,000 plastic glasses per week. This company supplies plastic glasses to another company, which packages the glasses as part of picnic sets. The second company randomly samples 10 glasses from the supplier. If at least

  83. math (statistics)

    A manufacturing company produces 10,000 plastic glasses per week. This company supplies plastic glasses to another company, which packages the glasses as part of picnic sets. The second company randomly samples 10 glasses from the supplier. If at least

  84. statistics

    Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey of 1026 adults by IBR Polls

  85. Statistics

    Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey of 1026 adults by IBR Polls

  86. statistics

    A random sample of 80 youths and a second random sample of 120 adults showed that 18 of the youths and 10 of the adults had been ticketed for careless driving. Use a 1% level of significance to test the claim that youth have a higher proportion of careless

  87. Statisics

    transportation officials tell us that 80% of drivers wear seat belt while driving. Find the probability that more then 567 drivers in a sample of 700 drivers wear seat belts

  88. stastics

    A survey of drivers in the United States found that 15% never use a cell phone while driving. Suppose that drivers arrive at random at an auto inspection station. a. If the inspector checks 10 drivers, what is the probability that at least one driver never

  89. statistic

    A survey of drivers in the United States found that 15% never use a cell phone while driving. Suppose that drivers arrive at random at an auto inspection station. a. If the inspector checks 10 drivers, what is the probability that at least one driver never

  90. Statistics

    Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey of 1026 adults by IBR Polls

  91. Language Art/ Literature

    How does the statement "Your glasses are clean.You wear 'em out, you have to buy a new pair." describe Frank's character from 'Thunder on Sycamore Street'.

  92. Statistics

    A recent survey of students on the question “Do you think the United States should retain or abolish the use of the penny as a coin of currency?” showed that 20 of the 28 students thought that the United States should retain the penny. Consider this

  93. English

    Thank you very much, Writeacher. Can you also suggest to me short reading comprehension (to be done in 15 minutes) with a set of comprehension questions at the end (intermediate level) ? Can you check if my sentences to turn into indirect speech are

  94. statistics

    A survey was conducted to measure the number of hours per week adults spend on home computers. In the survey, the number of hours was normally distributed, with a mean of 8 hours and a standard deviation of 1 hour. A survey participant is randomly

  95. grammar

    Hi I will appreciate if someone can help me with my homework: I have to write sentences using USED or DIDN’T USE. The teacher write sentences about Ana and then he said START TO WRITE SENTENCES WITH USE. He wrote: 1. I don’t work long hours any more.

  96. Statistics

    Politicians are interested in knowing the opinions of their constituents on important issues. One administrative assistant to a senator claims that more than 63% of adult women favor stricter gun laws. A recent telephone survey (randomly generated phone

  97. Physics

    Why do older people who do not wear glasses read books farther away from their eyes than younger people do?

  98. math

    there are 9 students who wear glassses. of the students who waer glassesor contact lenses,what percent are glasses

  99. Stats

    In the last Canadian census, 2.6% of all Ontario residents declared themselves to be Ukrainian ethnic origin. In a recent survey of 500 Ontario residents, 3.1% of people declared themselves to be of Ukrainian ethnic origin. Using the statistical meanings

  100. math

    in a large survey, it was discovered that 1 out of every 5 adults visits disney world every year. if 30 adults are randomly selected, what is the probability that exactly 7 of them will visit disney world this year.

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