A polling organization has been hired to conduct a survey to determine the proportion of people who are likely to support an upcoming ballot initiative. To help determine the size of the sample required for the main poll, a preliminary poll of 20 people is taken that yields the results below. (Yes indicates that the person will support the initiative, No indicates that they won't.)   YesYesNoNoNoYesYesYesYesYesYesNoNoYesYesNoYesYesNoNoYesNoYesNoYesYesYesYesYesYesNoYesYesYesNoNoYesNoNoNo   Based on the results of the peliminary poll, how large a sample is required for the main poll, assuming that the main poll should have a margin of error of 3% and a confidence level of 97.8%. Sample Size =

Q: A survey of 350 people shows that 210 people have seen a movie in the last month. Find the sample…

A: The sample proportion (p̂) is calculated by dividing the number of people who have seen a movie in…

Q: The city of Raleigh has 6800 registered voters. There are two candidates for city council in an…

A: Given : telephone poll of 500 randomly selected registered voters was conducted. 208 said they'd…

Q: Assume that we want to construct a confidence interval. Do one of the​ following, as appropriate.​…

A: The sample size is n=10. The confidence level is 95%. The population standard deviation σ is not…

Q: A sample of students is collected by randomly selecting 20 students from each of the 58 community…

A: It is specified that 20 students from each of 58 community colleges are randomly sampled.The…

Q: A survey of 250 households showed 91 owned at least one blower. Find an estimate for p, (proportion…

A: Given that there are total 250 households.  Among them, 91 owned at least one blower.

Q: Nationally, 83% of Americans have earned a high school diploma.  We want to see if the proportion of…

A: We have to find sample proportion.

Q: According to The Census Bureau, 60% of adults buy clothing online. a) How many adults did they…

A: Solution: a. From the given information, p=0.60 and E=0.03. The confidence level is 0.95.

Q: A political scientist surveys 40 of the current 138 representatives in a state's congress. What is…

A: Determine the size of the sample from the given data. The size of the sample from the given data is…

Q: ime Magazine plans to do a telephone poll of adult Americans to ask them “How much are you worried…

A: Time Magazine plans to do a telephone poll of adult Americans to ask them “How much are you worried…

Q: A senator wishes to estimate the proportion of United States voters who favor abolishing the…

A: Given data  99% confidence interval for sample proportion.  E = 0.03 n = ?

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 Sample of 25 cities have been classified as high or low on their homicide rates and on the number…

A: The formula for chi-square is, χ2=∑fo-fe2fe In the formula fo is the observed frequency, fe is the…

Q: The city of Raleigh has 7200 registered voters. There are two candidates for city council in an…

A: It is given that, a day before the election, a telephone poll of 200 randomly selected registered…

Q: Give the sample statistic for the proportion of voters surveyed who said they'd vote for Brown

A:

Q: a) Publish an advertisement inviting students to visit a website and answer questions. OA. This…

A: Administrators at Texas A&M University were interested in estimating the percentage of students…

Q: A political scientist surveys 35 of the current 158 representatives in a state's legisla What is the…

A: A political scientist surveys 35 of the current 158 representatives in a state's legislature. Size…

Q: In a poll of 515 human resource professionals, 45.8% said that body piercings and tattoos were big…

A: sample size(n)=515sample proportion()=0.458

Q: Suppose you want to find a simple random sample of 75 questions out of the entire population of…

A: Here the entire population contains N = 3631 questions. A simple random sample of size n = 75…

Q: ts) Suppose that 2% of all children have tuberculosis (TB). When a child who has TB is given the…

A: Let A1: The child has TB A2: The child does not have TB From given information P(A1)=0.02 P(A2)=0.98

Q: estimate the proportion of tenth graders reading at or below the eighth grade level. Ente

A: It is given thatThe total number of tenth graders =1265The number of students read above the eighth…

Q: know the preference of Marikeños regarding vaccine brand for booster shot, the city health officer…

A: Give that, To know the preference of Marikeños regarding vaccine brand for booster shot, the city…

Q: If the population of NM = 2.097 million persons and Dona Ana county has a population of 218,185. The…

A: Given: Total population of NM(n) = 2.097 million = 2097000 Population of Dona Ana county (x)= 218185

Q: A learning lab has commissioned you to administer a survey of people with dyslexia. You will use…

A: Given problem Given that

Q: (c) Construct and interpret a 90% confidence interval for the population proportion of adults in the…

A:

Q: It has been estimated that only about 30% of California residents have adequate earthquake supplies.…

A: The sample size (n) is 13 and p = 0.30.

Q: An ice hockey team is considering changing their team name and mascot and would like to measure city…

A: A voluntary response survey is the sample made up of people who choose to participate on their own.

Q: What is the size of the sample:  What is the size of the population:

A: A political scientist surveys 30 of the current 129 representatives in a state's legislature.

Q: A survey of the mathematics faculty at wassamatta university indicates that 9 faculty members are…

A: Given: A survey of the mathematics faculty at wassamatta university indicates that 9 faculty members…

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: to determine voters' feelings regarding an issue, a candidate asks a sample of people to pick 4…

A: Given:-           The number of 4 different word grouping is possible if the candidate raise a…

Q: A researcher is conducting an investigation regarding the factors affecting the performance of 200…

A: Given Information: Number of teachers in the province of Cavite is 200 Margin of error is 3% i.e.,…

Q: A police academy has just brought in a batch of new recruits.  All recruits are given an aptitude…

A: There are two types of hypothesis statements. They are null and alternate hypothesis. Null…

Q: The hospital readmission rate is often considered an indicator of an undesirable patient outcome.…

A: This is a cohort study. Because the team wants to evaluate the effectiveness of the measure, the…

Q: forest perserve. To do this, they capture a sample of 300 squirrels from randomly selected sites in…

A: Given that Number of squirrels captured and tagged =300 The following week, they catch another…

Q: Rangers tagged and released 250 small mouth bass into a Round Lake. A month later, fishermen on the…

A: Given that 250 small mouth bass are tagged and released in lake. A month later a sample of 50 mouth…

Q: Minnesota had the highest turnout rate of any state for the 2016 presidential election.† Political…

A: Given:x1=639, n1=852x2=378, n2=525   a)Here,p^1=x1n1=639852=0.75   Therefore, the proportion of…

Q: A certain county had a population of 34,485 people. The county hospital is interested in estimating…

A: They test blood samples from 228 patients. Out of this group, 10 have blood type-O. The probability…

Q: How many computers must be surveyed in order to be 99​% confident that his estimate is in error by…

A: Here given programmer plans to develop a new software system. In planning for the operating system…