researcher in a think tank surveys 70 Irish residents and asks them about their annual lottery expenditures. From the sample they found the 99% confidence interval for the average annual expenditures on the lottery for all Irish residents to be [903, 1034]. They claim that the average spend is less than 900 euros. Does the data support this?    1. We need to collect more data  2. Yes  3. No

Q: Of Alton High School football team's last 112 games, they won 67. Baylor High School lost some of…

A: Given information, we have two high school football team's.  From Alton high school, out of 112…

Q: Suppose a consumer advocacy group wants to conduct a survey to find if the proportion of consumers…

A:

Q: Students at a certain college were asked if they have a car. After surveying 823 students, it was…

A: We know that a margin of error tells us how many percentage points our results will differ from the…

Q: calculate the 95% confidence interval for the Presidential performance approval rating for a survey…

A: Solution: Let X be the number of people approved of the president’s performance and n be the number…

Q: A poll asked college students in 2016 and again in 2017 whether they believed the First Amendment…

A: In 2016, 2087 of 3103 students surveyed said that freedom of the press was secure or very secure. In…

Q: 25.  At a local college, 200 students were asked if they attended orientation. 112 said that they…

A:

Q: In a recent survey of 750 people, 600 people claimed to watch football.  Construct a 95% confidence…

A: Solution: 9. Let X be the number of people who watch football and n be the sample number of people…

Q: We surveyed 53 people in an attempt to determine the proportion of Americans who lease a vehicle. 13…

A: The proportion of sample Americans who lease a vehicle is, Thus, the proportion of sample Americans…

Q: researcher wishes to estimate the proportion of college students who cheat on exams. A poll of 520…

A:

Q: In a survey of 1400 people, 75% indicated that they listened to their favorite radio station because…

A: In statistical inference there are two branches-1)hypothesis testing and 2)Estimation In estimation…

Q: In a survey of 2282​ adults, 749 say they believe in UFOs. Construct a 90% confidence interval for…

A:

Q: b. In the year 2000, a survey of 977 U.S. adults were asked who they felt was the greatest…

A:

Q: In a survey of 50,00 people, 80% indicated that they listened to their favorite radio station…

A: Hern= 5000 P^ = 0.80 We have to construct 95% ci for p

Q: In your work for a real estate company, you find that in a sample of 1762 home buyers, 722 found…

A: Givenx=722n=1762p^=7221762p^=0.4098α=1-0.98=0.02α2=0.01zc=z0.01=2.3263         (from z-table)

Q: qualities as options, one of which is "communicator", as the most important quality for an effective…

A: It is given that  Favourable cases, X = 121 Sample size, n = 275 Sample proportion, p^ = X/n…

Q: when 282 college students are randomly selected and surveyed, it is found that 109 own a car. find a…

A: It is given that sample size (n) is 282 and x is 109.

Q: The following table shows the results of a survey in which 1017 adults from the United States, 1060…

A: (1)

Q: In a poll of 2,500 likely voters, 966 say that the Philippines spend too little on education. Find…

A: Ans- Given the level of confidence interval   90 %                                        Then   α =…

Q: A survey of 800 women shoppers found that 15% of them shop on impulse.  What is the 95% confidence…

A: n = 800p^ = 0.1595% CI for p = ?

Q: 4) A study of 12,000 cell phone users found that 125 of them developed cancer of the brain or…

A:

Q: The Nielsen company surveyed 257 owners of android phones and found that 217 of them planned to get…

A: From the provided information,

Q: An article a Florida newspaper reported on the topics that teenagers most want to discuss with their…

A: From the provided information, Sample size (n) = 502 37% would like to talk about school that is…

Q: A research institute poll asked respondents if they felt vulnerable to identity theft. In the​ poll,…

A:

Q: A marketing survey involves product recognition in New York and California. Of 558 New Yorkers…

A:

Q: A genealogist randomly selected 203 Americans and asked about their heritage. Of those randomly…

A:

Q: Construct a 95% confidence interval for the proportion of college students who say they own their…

A: Given : n=410 , X=155  , α=0.05 We want to find the 95% confidence interval for the proportion of…

Q: 3. In a sample of 300 people, 154 said that they watched news on television. Find the 90% confidence…

A: Given : Sample size of people (n) = 300 Let X : No. of people from sample  who said they watched…

Q: We are interested in determining whether or not there has been a significant change in the…

A:

Q: Your analysis of the raw data indicates that 16 of the 30 students reported driving no more than 20…

A: From the given information, let X be the number of students reported no more than 20 miles per day.…

Q: What will be observed if calculated the three confidence intervals at 90%, 95%, and 99%? How would…

A: if three confidence intervals are calculated at 90% 95% 99%

Q: A university planner wants to determine the proportion of undergraduate students who plan to attend…

A:

Q: Researchers are interested in the average heart rate of male college students. Assume a random…

A: Here, the sample proportion, p^ is 0.65 =130200 and the sample size, n  is 200. Using standard…

Q: Alan wants to estimate the proportion of adults who walk to work. In a survey of 10 adults, he finds…

A: Given: Alan wants to estimate the proportion of adults who walk to work. Total number of adults=10…

Q: The New York Times conducted a nationwide poll of 1048 randomly selected 13- to 17-year-olds. to…

A:

Q: in a survey of 692 lesbian, gay, bisexual, or transgender U.S adults 378 said that they consider…

A:

Q: 6) When 415 college students were surveyed, 175 said they own their car. Construct a 95% confidence…

A: Given, The sample proportion is, Critical value: Using z-table, the z-critical value at the given…

Q: According to a report published by the Pew Research Center in February 2010, 61% of Millennials…

A: Population proportion is used in hypothesis testing and confidence interval.

Q: In a survey of 952 respondents, 620 of them voted in a recent election. Find a 95% confidence…

A: From the provided information, Number of respondents (n) = 952 Number of respondents who voted in a…

Q: When 370 junior college students were surveyed, 145 said they have a passport.  Construct a 95%…

A: Zcrit = 1.96