A local school board wants to determine the proportion of households in the district that would support a proposal to start the school year a week earlier. They ask a random sample of 100 households whether they would support the proposal, and 62 households stated that they would. Assuming that conditions have been met, what is the 90% confidence interval for the true proportion of households that would support the proposal?

Q: c. Would a 90% confidence interval based on this sample be wider or narrower than the 95% interval?…

A: It is given that Sample proportion, p^ = 82% = 0.82Sample size, n = 800

Q: A poll of 827 students at Alpha State College found that 61% of those polled preferred a quarter…

A: Given that Sample size n = 827 Sample proportion of students who prefer a quarter system = 0.61 The…

Q: joint USA Today/CNN/Gallup Poll in July 2020 indicated that of 832 white adults, 46% thought…

A: Given n=832 P=0.46

Q: A board-game club meets each week at the local library. People bring different board games to play,…

A:

Q: A genetic experiment with peas resulted in one sample of offspring that consisted of 439 green peas…

A:

Q: Suppose that a random sample of 142 graduate-admissions personnel was asked what role scores on…

A: Given : Random sample of 142 graduate-admissions personnel Sample size (n)=142 Let X : No. of…

Q: A genetic experiment with peas resulted in one sample of offspring that consisted of 426 green peas…

A:

Q: An environmental science teacher at a high school with a large population of students wanted to…

A: The 95% confidence interval for the proportion of all students at the school who would respond yes…

Q: An epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential…

A: Given information- We have given that 35 have recently has the flu out of the random sample of 337…

Q: An epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential…

A:

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A: To find : the sample size The minimum sample size requires to estimate the population proportion.…

Q: A poll reported 38% support for a statewide election with a margin of error of 1.36 percentage…

A: Proportion of voters who supports for a statewide election Margin of error Confidence level

Q: In a survey of 464 registered voters, 143 of them wished to see Mayor Paz lose her next election.…

A:

Q: An epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential…

A: Sample of size n=334 people with favourable number of people had flu x=31 Then the proportion of…

Q: A principal of a large high school wants to estimate the true proportion of high school students who…

A: Given information- Sample size, n = 50 For a random sample of 50 students, the 95% confidence…

Q: A researcher was interested in knowing how many people in the city supported a new tax. She sampled…

A:

Q: A poll of 827 students at Alpha state college found that 61% of those polled preferred a quarter…

A: It is given that the proportion of the students who preferred a quarter system to a trimester…

Q: In 2017, the CDC administered the Youth Risk Behavior Survey (YRBS) to a random sample of 14,795…

A: The random variable cyber bullied follows normal distribution. The sample size is 14795. The number…

Q: 99% confidence interval for the proportion of the high school students who have been cyberbullied,…

A: Given that Sample size n = 14795 Number of high school students who have cyberbullied, X = 2219 The…

Q: In a sample of 500 Canadians, 275 say they would rather retire in the US than in Canada. Calculate…

A:

Q: A company reported that 72​% of 1691 randomly selected college freshmen returned to college the next…

A:

Q: A business school dean is contemplating proposing a change in the requirements for graduation. At…

A: It is given that sample size (n) is 100 and x is 56.

Q: In 2017, the CDC administered the Youth Risk Behavior Survey (YRBS) to a random sample of 14,795…

A: We have given that,  Favorable cases (X) = 2219 and sample size   (n) = 14795. Then,  We will find…

Q: What proportion of the sample reported that they had been cyberbullied?

A: Givensample size(n)=14795No.of respondents say yes they had been cyberbullied(x1) = 2219No.of…

Q: A health insurance firm wants to estimate the proportion of a population that would receive the flu…

A:

Q: Google is studying the quality of results returned by an upgraded version of its search engine.…

A: From the given information, it can be observed that x = 23 and n =100.

Q: A poll reported 60% support for a statewide election with a margin of error of 3.35  percentage…

A: The question is about sample size estimationGiven :Proportion of voters who supports for a statewide…

Q: A test question is good if it discriminates between prepared and unprepared students. The first…

A:

Q: in epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential…

A: Sample of size n=330 people with favourable number of people had flu x=34 Then the proportion of…

Q: an epidemiologist is womied about the prevalence of the flu in East Vancouver and the potential…

A: Given data, n=331 x=33 E=0.05 z-value at 95% confidence is Zc=1.960 n=?   p=x/n=33/331=0.0997

Q: A restaurant owner, who owns fast food restaurants throughout Arkansas, Texas, and Oklahoma is…

A: Givensample size(n)=200x=118sample proportion(p^)=xn=118200=0.59confidence level=99%

Q: An epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential…

A: given data, n=330x=30p^=xn  =30330  =0.090909CI=0.95E≤0.04n=?

Q: A government official is in charge of allocating social programs throughout the city of Vancouver.…

A:

Q: A regional survey of 561 companies asked the vice president of operations how satisfied he or she was…

A:

Q: Construct the 95% confidence interval. Can you conclude whether or not a majority or minority of the…

A: When a recent survey asked subjects whether it should or should not be the government's…

Q: An environmental science teacher at a high school with a large population of students wanted to…

A: Given information: To obtain a potentially less biased estimate of the proportion, a statistics…

Q: Find a 95% confidence interval for the proportion of the entire voter population who approve or…

A:

Q: In a past presidential​ election, 37,979,113 people voted for Candidate​ A 37,758,117 for Candidate​…

A: a. In the past presidential​ election, 37,979,113 people voted for Candidate​ A; 37,758,117 for…

Q: A survey of 800 randomly selected adults in a certain country found that 82% believed that…

A: sample size(n)=800sample proportion()=0.82Confidence level=95%

Q: A magazine publisher wishes to determine what proportion of current subscribes will renew. The…

A: we have given that  sample size n=200 and favorable cases x=108  sample proportion p^= x/n =108/200…

Q: A high school is running a campaign against the over-use of technology in teens. The committee…

A: sample size(n1)=200sample proportion()=0.85sample size(n2)=180sample proportion()=0.55confidence…

Q: An epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential…

A: Solution: Given : Sample size (n)=337 Sample proportion =P^=31337=0.09198813

Q: An environmental science teacher at a high school with a large population of students wanted to…

A: Question : (b) Given the method used by the environmental science teacher to collect the responses,…

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.