In October 2017, the Gallup Poll asked a sample of 10281028 U.S. adults, "Are you in favor of the death penalty for a person convicted of murder?" Suppose that the margin of error needs to be half as large for this poll. How many people must be interviewed? Note that the size of the new sample is denoted by ?.n. Give your answer as a whole or exact numbe

Q: A Pew Research study estimates that 803 million people live in poverty today, after the 2020 global…

A: It is given that 803,000,000 people live in poverty today, out of 7,754,000,000 people worldwide.

Q: A small-town mechanic says that 8% his customers come in for an oil change. When  1000 samples were…

A: Target population means, the set of elements that we want to know more about

Q: If a study was counting cells on a petri dish and listed an of n=25, what would the df be for the…

A:

Q: A coach is interested in how many cartwheels the average college freshmen at his university can do.…

A: The coach is interested in how many cartwheels the average college freshman can do at his…

Q: In 2010, the Physicians Foundation conducted a survey of physicians’ attitude about health care…

A: The survey was sent to total 100,000 physicians.

Q: In a survey of 1009 parents of children ages​ 8-14, 74​% say they are willing to get a second or​…

A: Given n=1009 P=74%=0.74 E=2%=0.02

Q: A survey asked a random sample students if they estimated they spent more or less than an hour a day…

A: Given that   More  less  7th grade  24 25 8th grade 28 26 We have to find the number of…

Q: (a) How large should the sample be if the margin of error is to be less than $4? ANSWER: (b) If we…

A: here given , Population standard deviation  =  34$  Confidence level = 90%  MOE < 4 $

Q: A researcher wants to find out the number of students he needs to urvey in a school provided that…

A: Given : total no pf students in a school  N=5000 with margin of error e=5%  To find sample size…

Q: A researcher at a major hospital wishes to estimate the proportion of the adult population of the…

A: Obtain the large sample size. The large sample size is obtained below as follows: Use EXCEL…

Q: In order to estimate the attendance at a 1,000,000 square foot mall, a sample of people is taken in…

A: We will solve the problem

Q: A report says that the average amount of time a 10-year-old American child spends playing outdoors…

A: A report says that the average amount of time a 10-year-old American child spends playing outdoors…

Q: Americans who believe the government should ensure basic health care is _________% with a margin of…

A:

Q: Readers of the magazine Popular Science were asked to phone in (on a 900 number) their responses to…

A: Answer:

Q: Do 8% of Dallas citizens commute to work? A survey on commuting by car was done on a random sample…

A:

Q: Wore a bicycle helmet (among students who had ridden a bieyele during the previous 12 months)?…

A: Solution-: We have, The given frequencies table are observed frequencies    12th-Grade Boys 12th-…

Q: Identify the population and sample. In a random sample of Salinas residents, 137 said they would…

A: Population: The population in a statistical study is the entire group of individuals about which we…

Q: P(PCC student is Democrat)

A: The probability formula is, Probability=Number of favourable observationsTotal observations A sample…

Q: Suppose that a poll of 326 voters finds that 34% of those surveyed support Measure A. What is q'?…

A: The given values are, The formula for calculating the value of q'is

Q: 40. Of 1,000 people consulted, 811 liked chocolates, 752 liked toffees and 418 nd

A: Given problem Given that   Method 1 :

Q: In a survey of 1200 workers, 35% said they eat at home during a typical work week. What is the…

A:

Q: In a local election, 56.0% of those aged under 40 and 48.8% of those aged over 40 vote in favor of a…

A: Independent Events:Two events are said to be independent if occurrence of one event does not affect…

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: SRS of 25 commuters to the Washington DC re selected, and each is asked how far they ommute to work…

A: Given data,n=25The sample mean x=39Sample sd     s=6Construct 90% CI?

Q: For a science fair project, Barbara is trying to estimate the population of armadillidiidae bugs…

A: Given, Barbara traps 180 roly polies, marks them, and release them.  She then replaces the traps and…

Q: I want to be sure to obtain a margin of error of ±5 % in a poll asking whether people support…

A: Given information: Margin of Error=+/-5%=0.05 Let level of significance=0.05 Let the proportion of…

Q: A large university has 24,000 student a randomly-selected sample of 750 students were surveyed  and…

A: Given that there are 24,000 students out of which a randomly selected sample of 750 students. out of…

Q: 4. A private opinion poll is conducted for a politician to determine what proportion of the…

A:

Q: Suppose you toss a fair coin 10,000 times. Should you expect to get 5000 heads?

A: As we know every time a fair coin is tossed the chance of getting head or tail is equal that is 50…

Q: A pollster wishes to estimate the proportion of United States voters who favor capital punishment.…

A: Given, 1 - α = 0.98ME =margin of error = 3% = 0.03To find the sample size is needed?

Q: In a recent Gallup poll, 1003 randomly selected adults in the United States were asked if they have…

A: According to the provided information, 1003 randomly selected adults in the United States were asked…

Q: - In a survey of 500 students of a college, it liked watching hockey and 62% liked watc

A: Given, in a survey of 500 students of a college, it was found that 49% liked watching football, 53%…

Q: Suppose that a poll of 343 voters finds that 27% of those surveyed support Measure A. What is q?…

A: Given ,n=343p=27%E=n*p=343*0.27 =92.61q=?

Q: researcher surveys a sample of n = 20 college students and asks each person to identify their…

A: Given Information:   n = 20 students

Q: A researcher surveyed 80 randomly selected Certified Public Accountants in each of the cities in…

A: The 2*4 contingency table is given. There are two categorical variables are Free Work and Cities. We…

Q: If there are 11 data points in a set of data, what is the number of degrees of freedom? (Enter an…

A: We have to find out degree of freedom..

Q: If there are 41 data points in a set of data, what is the number of degrees of freedom? (Enter an…

A:

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: Given the above population, what is the P(Female|Bachelor's OR more in educational attainment)?…

A: Introduction: Suppose A and B are two events, with respective probabilities P (A) and P (B). Denote…

Q: How large a sample is needed

A: Given :  Margin of error=E=3%=0.03 Significance level=α=0.01 The critical value is ,…

Q: Suppose that the results of a survey show that 53% of people consider summer as their favorite…

A: Given that Results of a survey show that 53% of people consider summer as their favorite season.…

Q: Q2 A new all-purpose cleaner is being test-markete locations in various supermarkets. The numbers…

A: By applying the ANOVA test for a single factor,

Q: Supposed that in the past, 10% of women in the Philippines have severe dysmenorrhea. Do we have…

A: Followings are the answer of the questions The following information is provided: The sample size is…

Q: . In preparing a report on the economy, we need to estimate the percentage of business that plan to…

A:

Q: A study in 2014 indicated that 19% of American households have a landline telephone that they do not…

A: Binomial distribution: A discrete r.v. X taking values 0,1,2,3, …., n is said to follow a binomial…

Q: Anews service conducted a survey of 1049 adults ages 18 years or older in a certain country. August…

A: Given, The results of a survey, On the basis of the results, we need to say the research objective,…

Q: Show that it is possible to find the 3-median of n numbers using O(n) comparisons.

A: It is possible to find the 3-median of n numbers using O(n) comparisons

Q: With a sample size of 400

A:

Q: A staff member from Student Services conducts a survey of students at the Highland campus and…

A:

Q: time a 10-year-old American child spends playing outdoors per day is between 19.28 and 24.08…

A: Given Data Lower limit = 19.28 upper limit = 24.08

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.