A politician running for Senate in California claims that only 34% of Californians approve of the job her competitor is doing. Melissa wants to test if this is true. She surveys 50 Californians.

Q: Felicia is conducting a survey to determine the determine the favorite TV show among her community.…

A: Stratified sampling: In stratified sampling the whole population is divided into two or more…

Q: A senior inspector will inspect 10 rooms this week. (d) To have a fair representation, how many…

A:

Q: When taking a 20 question multiple choice test, where each question has 5 possible answers, it would…

A: We have n = number of multiple choice questions = 20 p = probability of question correct = 0.20 So…

Q: In a poll of 2900 adults in a certain country, 1595 of the adults believed that the Olympics should…

A: Let the number of students who believe to be restricted to be x

Q: What fraction of survey respondents identified themselves as Republicans? What fraction of survey…

A: As per our guidelines, we are allowed to answer first three sub-parts only. Thanks Given :

Q: A survey shows that 3/5 Australian adults are overweight and 1/10 Australian adults are obese. What…

A:

Q: How many students passed all three exams?

A: here from given information define events and draw venn diagram  student fail in math(algebra) = M…

Q: A recent issue of a national magazine reported that in a national public opinion survey conducted…

A: a) Sample: A subset or portion of the population that is actually obtained and used to draw…

Q: An industrial/organizational psychologist wants to improve worker productivity for a client firm,…

A: The following information is given: n=250,  M=9,  s=10.4 Let X denote the number of hours legal…

Q: If the sociologist can sample 100 women, what will the margin of error be?

A:

Q: A survey of 150 people revealed that 115 people like ketchup on their hot dogs, 85 people like…

A: Concept of General Addition Rule: For any two events A and B the General Addition Rule state that:

Q: Raina ran for president of the chess club, and she received 39 votes. There were 65 members in the…

A:

Q: When taking a 7 question multiple choice test, where each question has 5 possible answers, it would…

A:

Q: A donut store sells packages store have for sale?

A: Introduction: A function is a method or a relationship that connects each member 'a' of a non-empty…

Q: The San Diego union tribune choose a question each week and asks readers to call in their responses.…

A:

Q: A recent survey found that 79% of Americans use the Internet. If a city has a population of 76,000,…

A: Population of city, p=76,000 Percentage of population that uses internet is 79%.

Q: If 90% of the athletes who test positive for steroids in fact use them, and 10% of all athletes use…

A:

Q: Among survey respondents who thought the economy was getting better, what fraction were Democrats?…

A: Given -   Better Same Worse Total Republican 38 104 44 186 Democrat 12 87 137 236 None 21…

Q: Find the number of respondents needed in a poll to determine, within 1.5% margin of error, the…

A: The answer is attached below,

Q: When taking a 18 question multiple choice test, where each question has 5 possible answers, it would…

A: We have to find unusual number of success.

Q: Which company should Tiago chose? Explain why.

A: Given: Company A-  Mean = 845€ Median = 800 € Standard deviation = 260€ Company B-  Mean = 875€…

Q: When taking a 17 question multiple choice test, where each question has 5 possible answers, it would…

A:

Q: A 20-minute consumer survey mailed to 500 adults aged 25-34 included a $5 Starbucks gift…

A: Given: Total adults = 500 A 20-minute consumer survey mailed to 500 adults aged 25-34 included a $5…

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: The Arizona Department of Transportation wishes to survey state residents to determine what…

A: Suppose p̂ is the sample proportion of the population, who would like to increase state-wide…

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

A:

Q: Out of 1000 people surveyed, 850 said they like chocolate.  What proportion of people surveyed said…

A: Given: The total number of people surveyed is 1000 850 people said they like chocolate We have to…

Q: When 3,011 adults were surveyed in a Pew Research Center poll, 73% said that they use the internet.…

A: n = 3011 smaple proportion = 0.73 population proportion = 0.75

Q: The seniors in my math classes were asked about whether they would pay for either a senior trip or a…

A: The question is about categorical data analysis Given :   To test : A senior trip is more popular…

Q: In a city of 45,000 homes, a survey was taken to determine the number with Wi-Fi access. Of the 500…

A: Here in a city there are 45000 homes  i.e. N = 45000 500 homes are surveyed, 300 had wifi access…

Q: In the upcoming election for governor, the most recent poll, based on 900 respondents, predicts that…

A: From the given information, In the upcoming election for governor, the most recent poll, based on…

Q: A school board has a plan to increase participation

A: Given, a school board has a plan to increase participation in the PTA. Currently only about 27…

Q: .A recent news program reported that the presidential approval rate was 51% with a margin of error…

A: A recent news program reported that the presidential approval rate was 51% with a margin of error of…

Q: Could you give a background question where 12! would be the answer?

A: Please find the explanation below. Thank you

Q: When taking a 6 question multiple choice test, where each question has 5 possible answers, it would…

A: Given, In the multiple-choice test having 6 questions and each questions having 5 possible answers…

Q: b. In a Pew Research Center poll on driving, 58% of the 1182 respondents said that they like to…

A: Step 1. (b) Total number of respondents is study =1182.

Q: A poll of 1000 voters has Biden leading by 538 to 462. What will the pollster indicate as the…

A:

Q: When taking a 12 question multiple choice test, where each question has 3 possible answers, it would…

A:

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

A:

Q: When taking a 16 question multiple choice test, where each question has 5 possible answers, it would…

A: Given : Number of sample = n = 16 Probability of correct answer = 1/5 = 0.20

Q: A small town has a total population 25000 out of which 13000 read "Nav bharat" and 10500 read "The…

A: We will find out the required value.

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

A:

Q: In a survey of a sample of 1050 teenagers, 17% said they like to watch soccer.

A: Given that  In a survey of a sample of 1050 teenagers , 17% said that they like to watch soccer.…

Q: When taking a 20 question multiple choice test, where each question has 3 possible answers, it would…

A: It is given that n =20 and p=1/3.

Q: is winning the election (in other words, his support rate is higher than 50%)?

A: Here confidence interval for proportion is as shown in further step

Q: When the ballots in box 1 were counted, there were 5,180. In box 2 there were 4,848, and in box 3…

A: .

Q: A national television channel posted the result of their web poll: 63 percent of Americans favor…

A: Given Data

Q: In a poll of 480 universities students, 220 said they were opposed to legalizing marijuana estimate…

A: We have to find correct answer..

Q: When taking a 18-question multiple-choice test, where each question has 4 possible answers, it would…

A: Givenn=18p=14let x=no. of correct answersx~Binomial(n=18,p=14)P(X=x)=Cxn Px (1-p)n-x ; x=0,1,2....n

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.