A telecommunications company conducted a survey about cell phone companies. Of 1800 randomly and independently selected people surveyed, 1275 preferred AT&T to Sprint. What proportion of people preferred AT&T to Sprint? Write your response as a decimal and round to the nearest hundredth.

Q: The failure rate for taking the bar exam in Philadelphia is 41%.  If 375 people take the bar exam,…

A: Given that, The failure rate for taking the bar exam in Philadelphia is 41%  i.e. probability, p =…

Q: Jerri collects data from 100 people about how much mileage they put on their vehicle each week.…

A: Given information: Jerri collects data from 100 people about how much mileage they put on their…

Q: A survey of 78 men found that 10 have a social media account. Another survey of 51 women found that…

A: Given Information: Women: Sample size (n1) = 51 Out of which X1 = 26 have a social media account.…

Q: A group of college DJs surveyed students to find out what music to play for their upcoming party.…

A:

Q: Among the people in the age class "18 - 24", what is the percentage of people who prefer "Soft…

A: Given that Number of people who prefer soft drinks and in the age class 18 - 24 = 90 Number of…

Q: A middle school took all of its 6th-grade students on a field trip to see a ballet at a theater that…

A: Given that there are total 3840 seats. The students left 2496 seats vacant. This means the students…

Q: The International Brotherhood of Slide Whistlers wants to conduct a survey to find what proportion…

A: Let COnfidence interval be 90% Zc=1.645 E=3%=0.03 p=0.5 n=?

Q: Emma’s 100-meter dash time is ranked at the 96thpercentile among all highschool sprinters in the…

A: We have to find Emma's rank.

Q: Which types of car were driven by more than 623 respondents in the survey?

A: Here use proportion from given pie chart And calculate no of people drive that type of car

Q: At Roxbury Community College, 7 out of every 10 students take Introduction to Statistics. If there…

A: Given that, At some college 7 out of every 10 students take introduction to statistics. Formula:…

Q: if i have a 73.8 average in math, and I get a 30% mark in my last test, what we

A: Introduction: a number obtained by multiplying two or more quantities and then dividing the total by…

Q: the average ( arthimetic mean ) of three  numbers is equal to 56 . if one of the numbers is 25 ,…

A:

Q: The median salary of the 1,264 teachers in a large public school district is $39,350. If the 66th…

A:

Q: The 1994 Northridge, California earthquake measured about 5,011,000 times as intense as a 0-level…

A:

Q: We made a survey with the number of people in a household and the number of times they get sick…

A: Solution: Let x be the number of people in a household  y be the number of times they get sick in a…

Q: If a child psychologist wanted to determine if there is a relationship between gender of a child and…

A: Chi-square test of independence should be used here.

Q: You survey 100 people and find that 75 of them would prefer to work at home to some extent. When…

A: Given: You survey 100 people and find that 75 of them would prefer to work at home to some extent.…

Q: n 2015, the median family income in the United States was $66,650. (Source: U.S. Census Bureau) If…

A: It is given that the median family income in the United States is $66,650.

Q: Among the 2302 respondents, 56 said they have more than five tattoos. What percentage of respondents…

A:

Q: At Roxbury Community College, 7 out of every 10 students take introduction to Statistics. If there…

A: given data  N = 2500 students total in college  7 out of every 10 students take introduction to…

Q: on a multiple choice test with 20 questions, each question has 4 possible answers, one of which is…

A: We have to find mean  for students who guess at all  correct answers..

Q: An article in the Archives of Internal Medicine reported that in a sample of 224 men, 73 had…

A: Here 224 men and 232 women are selected randomly. 73 of the men had elevated cholesterol levels,…

Q: A cafeteria manager surveyed a random sample of students at a school to determine which of 2 meal…

A:

Q: The high tech industry claims that women have the same chance of being hired as men. If this is so,…

A: In this question, we need to find the expected number of company to have 11 or more female…

Q: In a poll of 2600 adults in a certain country, 1742 of the adults said that they had online access…

A:

Q: During a week in September 2009, the Nielsen ratings for Family Guy were 8.1/12 which means 8.1 out…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: An airline food service found that a recent flight of 120 passengers ordered dinner as depicted in…

A:

Q: Mr. White collected data from his eighth grade class on whether they prefer the zoo or the museum.…

A:

Q: A survey of 1179 adults nationwide  asked what irks you most about The actions of other Motorist"The…

A: Given: Number of People surveyed=1179 People voted for tailgater=796 To find: Percentage(x).

Q: A 2014 Pew Research Center Survey asked 2,002 adults about the intersection of politics and science.…

A: The provided information are:Number of trials (n) = 2002Number of successes (X) = 1281

Q: In a survey 300 adults were interviewed, 123 said they had yearly medical checkup. Find the 95% for…

A: Sample size is n = 300 Number of adults who had yearly medical checkup, X = 123 The critical value…

Q: 4 were on time and 2 were late, how many of the next 12 trains would you expect to be on time?

A: The probability that the train would be on time is, Pon time=46=23 The probability that the train…

Q: The U.S. Census Bureau collects data on household size and publishes the information in Current…

A: Quantitative variable: The variable which can be measured using the number is called the…

Q: Give three numbers whose mean is 8, mode is 6 and median is 10 and range is 8.

A:

Q: According to the U.S. Department of Labor, the median annual salary in 2003 for a physical therapist…

A:

Q: Which player had the higher average points when compared to the other players on his team? O Fredo

A: Given information: The average points and standard deviations for the players Freda and Kari…

Q: According to the U.S. Department of Labor, as of May 2009 the median annual salary for a physical…

A: Assume X be the random variable representing the annual salary of a physical therapist (in dollars).…

Q: Sony wants to administer a satisfaction survey to its current customers. Using their customer…

A: solution : the above question answer D is correct answer : Simple random

Q: On a test, if 115 questions are answered and 41% of them are correct, what is the number of the…

A:

Q: In a poll of 2300 adults in a certain country, 1426 of the adults said that they had online access…

A: In a poll of 2300 adults in a certain country, 1426 of the adults said that they had online access…

Q: Katrina must take five exams in a math class. If her scores on the first four exams are 71, 69, 85,…

A: Given that Katrina scores on the first four exams are 71, 69, 85, and 83 and suppose she scores x…

Q: Suppose that the result of a public opinion poll shows that just 10% of people would be willing to…

A:

Q: For this year's mayoral election, voter dissatisfaction is very high. In a survey of 500 likely…

A: It is given that the number of voters who plan to write in an independent candidate is 240 and the…

Q: A survey found that 31% of Americans watch the fireworks on the 4th of July from their TV. If 20…

A:

Q: The median salary of the 1,073 teachers in a large public school district is 38,850 dollars. If the…

A: From the given information, Total number of teachers =1073 Median salary of a teacher = $ 38,850…

Q: In 2015, the median family income in the United States was $66,650. (Source: U.S. Census Bureau) If…

A: It is given that, In 2015, the median family income in the United States was $66,650. If the 90th…

Q: Three-fourth of the students in the class have an average IQ of 120 and the rest have an average IQ…

A:

Q: Find the percentage of data that lies below -2.40, above 1.73, and between -2.40 and 1.73

A: Given data To Find the percentage of data that lies below -2.40, above 1.73, and between -2.40 and…

Q: On a multiple choice test with 9 questions, each question has four possible answers, one of which is…

A: It is given that there are 9 questions and each question having four possible, one of which is…

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.