At one large college, 660 out of the 1500 students surveyed said they plan to take another science class. Find the 95% confidence interval for the proportion of students that said they plan to take another science class

Q: How many of the 3005 subjects used at least one prescription medication? Construct a 90% confidence…

A: p=0.817 = probability of subject use at least one prescription  n = 3005 = number of adults involved…

Q: Why does increasing the confidence level result in a larger margin of error?

A: We know that the Margin of error is directly proportional to the test statistic's critical value,…

Q: A sample survey finds that 30% of a sample of 880 Ohio adults said good health was the thing they…

A:

Q: Strictly speaking, what is the best interpretation of a 95% confidence interval for the mean? If…

A: In general, the 95% confidence interval interprets that there is 95% confidence that the population…

Q: Find the 95% confidence interval for the mean difference of the tests, and explain it.

A: Test - 1 (X) Test-2 (Y) (x-xbar) (x-xbar)^2 (y-ybar) (y-ybar)^2 1.2 1.4 -0.31111 0.09679 -0.24444…

Q: In a survey of 2344 ​adults, 715 say they believe in

A: Given that there are 2344 adults and 715 say they believe in UFOs. Consider the sample proportion,…

Q: In a study by Sallie Mae and Gallup, 223 of the 934 respondents said that they paid for their…

A: Obtain the 95% confidence interval for the proportion of students who paid for their education by…

Q: In a situation where the sample size was decreased from 39 to 29 in a normally distributed data set,…

A: Confidence interval formula is given by

Q: In a survey, a random sample of teenagers were asked whether they have a sibling. The resulting…

A:

Q: Of 380 randomly selected medical students, 21 said that they planned to work in a rural community.…

A: Sample proportion=p^=21380z=critical value for 95% confidence interval=1.96n=sample size=380

Q: Out of 156 Nielsen families surveyed about their viewing habits, 43 felt that television was too…

A: We have given that,  Favorable cases (X) = 43 and sample size (N) = 156  Then,  We will find the 99%…

Q: In a Gallup Poll of 1005 individuals, 452 thought they were better off financially than a year ago.…

A: Given; p=452n=1005 95% confidence interval is given by- p^±z×p^(1-p^)n true proportion is given as-…

Q: If n = 200 and p^ = 0.64, find the margin of error at a 95% confidence level.

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Q: A survey found that out of 900 workers, 150 said they were interrupted by frank phone calls. Find…

A:

Q: In one city, 59.6% of the 1500 students surveyed said they eat at the school cafeteria. Find the 95%…

A: Given, Sample size=n=1500 p^=0.596 α=0.05

Q: The International Nanny Association reports that in a sample of 528 in-home child care providers…

A: Solution:Part (a): Finding the 95% confidence interval for the true proportion of all nannies who…

Q: Of 380 randomly selected medical​ students, 21 said that they planned to work in a rural community.…

A: Given that 380 randomly selected medical​ students, 21 said that they planned to work in a rural…

Q: Find a 95% confidence interval for the proportion of renters.

A: It is given that  Favourable cases, X = 360 Sample size, n = 600 Confidence interval = 95%

Q: For a group of 45 students taking a PSDTF test, the mean heart rate was 96 beats per minute, and the…

A:

Q: kendall wants to estimate the percentage of vegetarians who are also vegan. She surveys 150…

A: The margin of error for the 95% confidence interval of population proportion is given as follows :…

Q: In a study by Sallie Mae and Gallup, 323 of the 1404 respondents said that they paid for their…

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Q: How large is the sample if the confidence level is 97%, Ɛ = 2.5%  and ρ = .35?

A:

Q: In the Framingham Offspring study 3630 subjects were on anti-hypertensive medication out of 4657…

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only…

Q: What happens to the margin of error if you increase the confidence level?

A: We know that, Margin of error=zσn

Q: If n=200 and ˆpp^ (p-hat) =0.39, find the margin of error at a 99% confidence level

A: Find z-critical value:…

Q: 4. A researcher asks 600 people if they received a flu vaccine, and 65% said they did. What is the…

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Q: An investigative reporter contacts a random sample of hotels, and finds a 95% confidence interval…

A: Given that  The 95% confidence interval for the proportion of hotels in the united states have…

Q: Why is a 99% confidence interval wider than a 95% confidence interval?

A: The confidence interval formula is sample statistic±Margin of error. The margin of error is the…

Q: State the equation for the 95% confidence interval?

A: The equation for confidence interval can be stated as: Here x̅ is the sample mean, Zα/2 is the…

Q: If 64% of a sample of 550 people leaving a shopping mall claims to have spent over $25 create and…

A: Given,   Sample size = 550 Sample proportion = 0.64   Critical value: Using z-table, the z-critical…

Q: Of the 1,000 people, 550 people used company s's smartphone and 460 people used company a's…

A: Given: n= 1000 ,x= 550.0 At 95.0 % confidence level , z score= 1.96 Need to find confidence…

Q: Which of the common confidence levels (90%, 95%, or 99%) would you prefer to use if you wanted to…

A: Introduction: The “smallest” confidence interval implies the confidence interval with the shortest…

Q: Is 12 minutes the margin of error for this 95% confidence interval v [Select ]

A: The 95% confidence interval for the average arrival time before departure for all air travellers is…

Q: A marketing study by Ford Motor Company finds that 320 of the 650 buyers of compact cars were women.…

A: Let the population proportion of women who bought compact cars be P Given:         Sample size n =…

Q: n our Condor Cafe, the Oxnard College Culinary Program offers the most delicious and affordable…

A: Given that, n=255,x=75

Q: In the previous example, you learned that the 95% confidence interval for the true proportion of all…

A: Calculate the point estimate and margin of error used to create this confidence interval.

Q: Find the confidence level and a for an 88% confidence interval.

A: Here use confidence level and significance level as alternative of each other

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: The 2010 General Social Survey reported a sample where about 48% of US residents thought marijuana…

A:

Q: A survey​ asks, "If the husband in a family wants​ children, but the wife decides that she does not…

A: We have to create 99% confidence interval for the population proportion.

Q: As the sample size gets smaller, what happens to the width of your confidence interval? O Wider /…

A: A confidence interval is an interval with a certain probability that a parameter will fall between…

Q: A Gallup poll of 1487 adults showed that 43% of the respondents have Facebook pages.  Construct a…

A: Confidence Interval: In statistics, we can say a range of values of the specified population…

Q: in a recent survey of 1000 adults ages 18 to 40, 34% said they had no credit cards. find the 95%…

A: The sample size n=1000. The sample proportion is 0.34. The confidence level is 95%. The area between…

Q: Michelle, a student studying music, randomly sampled fellow music majors and asked whether they…

A: Given information- Confidence interval = (0.09, 0.26) We have to find margin of error. We know that-…

Q: A survey of 360 college seniors found that 305 wish they had spent more time studying. Find a 94%…

A: Givensample size(n)=360x=305p^=xn=305360=0.8472confidence interval = 94%

Q: A recent study of 750 internet users in Europe found that 35% of internet users were women. What is…

A: It is given that the study of 750 internet users in Europe found that 35% of internet users were…

Q: When 258 college students are randomly selected and surveyed, it is found that 106 own a car. Find a…

A: The provided information is: It is given that 106 college students (s) own a car among 258 college…

Q: When 500 college students were surveyed, 30% said that they own their car. Construct a 95%…

A: Here we want to find the 95% confidence interval.

Q: Of 380 randomly selected medical students, 21 said that they planned to work in a rural community.…

A: Here we need to construct a 95% confidence interval for the population proportion. Here the sample…

Q: A statistics student wants to conduct a study to determine the proportion of workers in Cititon who…

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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.