market analyst is curious what proportion of Carolina residents have a landline. A survey of 94 randomly selected Carolina residents shows that 46 of those selected have a landline phone. The analyst wants to use this data to construct a sample z interval for a proportion. Based on this sample, which of the following is a 90% percent confidence interval for the proportion of residents who have a landline? Select one: a. The interval is (0.4233, 0.5555).

Q: The figure to the right shows the results of a survey in which 1013 adults from Country A, 1001…

A: Given data for country C is        n=1021        P=25%=0.25       Z- value at 95% confidence…

Q: The figure to the right shows the results of a survey in which 1013 adults from Country A, 1001…

A:

Q: A polling agency reported that 66 percent of adults living in the United States were satisfied with…

A: The 100 (1 – α)% confidence interval provides an interval estimation of the required population…

Q: a. How many of the 3039 subjects used at least one prescription medication? (Round to the nearest…

A: Given : Total sample size of the survey  = 3039 Out of the sample, proportion of people who have…

Q: Which of the following is thet-value for a 95% confidence level when the sample size is 20. O a.…

A:

Q: In a survey of 3700 TV viewers, 834 said they watch network news programs. Find the margin of error…

A: Solution

Q: The figure to the right shows the results of a survey in which 1015 adults from Country​ A, 1018…

A: The 99% confidence interval for population proportion is For 99% confidence, zc = 2.58

Q: In a survey on supernatural experiences, 722 of 4019 adult Americans surveyed reported that they had…

A: Given : Sample Size, n = 4019 Number of successes, x = 722 confidence level,c=0.9

Q: In a random sample of 850 consumers. 385 reported that they were able to purchase a Playstation 5.…

A: According to the given information, we have In a random sample of 850 consumers. 385 reported that…

Q: The Municipal Transit Authority wants to know if, on weekdays, more passengers ride the north bound…

A: Given information- We have given two sample of the 8:15 train and 8:30 train. Sample 1 for 8:15…

Q: Which of the following would result in the narrowest confidence interval? A. 80% confidence level…

A: The narrowest confidence interval will result from larger sample size and a smaller confidence…

Q: The figure to the right shows the results of a survey in which 1001 adults from Country​ A, 1014…

A: For country A: It is given that sample size (n) is 1001 and the sample proportion is 0.34.

Q: Gallup is a company that carries out daily opinion polls on a variety of topics. In a recent daily…

A: The confidence interval can be found by using the formula p±zp(1-p)n

Q: The figure to the right shows the results of a survey in which 1003 adults from Country A, 1024…

A: Given information For country A p-hat = 0.35 n = 1003

Q: The figure to the right shows the results of a survey in which 1003 adults from Country A, 1024…

A: Given information For country A p-hat = 0.35 n = 1003

Q: 1992, the women in two statistics classes for students in the liberal arts at a large northeastern…

A: In 1992, the women in two statistics classes for students in the liberal arts at a large…

Q: The figure to the right shows the results of a survey in which 1005 adults from Country​ A, 1023…

A: From the provided information, Sample size of Country B (n) = 1023 Sample proportion (p̂) = 0.22…

Q: A random sample of 200 female high school students in India showed that 110 are on Facebook. A…

A:

Q: Using the accompanying colleges and universities data to find 95% confidence intervals for the…

A: Given:   Liberal Arts Colleges Research Universities 1169 1117 1194 1133 1204 1148 1210…

Q: Suppose that a 95% confidence interval for a population p = the population proportion of men who…

A:

Q: The figure to the right shows the results of a survey in which 1010 adults from Country A, 996…

A:

Q: The figure to the right shows the results of a survey in which 1016 adults from Country A, 1014…

A: Proportion is almost similar to the concept of probability. Proportion is a fraction of population…

Q: Which of the following would result in the widest confidence interval? O A sample size of 30 with…

A:

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

A: Note- Here I am taking the sample size as 380 because then only the answer will match with the given…

Q: Which of the following would result in the narrower confidence interval?

A: Note: The confidence interval with small confidence level has the narrower confidence interval. The…

Q: The figure to the right shows the results of a survey in which 1005 adults from Country​ A, 1023…

A: For the given data The99​%confidence interval for the proportion of adults from Country B who say…

Q: Researchers investigating the new Johnson & Johnson COVID Vaccine selected a random sample of 200…

A:

Q: Use the given degree of confidence and sample data to construct a confidence interval for the…

A:

Q: A survey of 800 women shoppers found that 17% of them shop on impulse What is the 98% confidence…

A:

Q: You are doing a class project for Stat 1, and do not have enough money to sample all mobile home…

A: At 95% confidence level, α=0.05 and z=1.96.

Q: In a harvest of 50 watermelons, farmers prefer at least 72% of watermelons to be classified as…

A:

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 exploring possible sites for a convenience store in a large neighbourhood, the retail chain wants…

A: Determine whether the given margin of error is appropriate if  the random sample of size n = 100…

Q: An airline transports over 10 000 passengers daily, and the airline is curious what proportion of…

A:

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: d) Provide the appropriate interpretation for the confidence interval.

A:

Q: A poll commissioned by the Center on Addiction and Substance Abuse at Columbia University found that…

A: Given that, X = 1340 N = 2000 98% confidence level

Q: The figure to the right shows the results of a survey in which 1005 adults from Country​ A, 1023…

A: For the given data Construct a 99​% confidence interval for the population proportion of adults s…

Q: If a corporation wishes to construct a 95% confidence interval for the proportion of all adolescent…

A:

Q: The figure to the right shows the results of a survey in which 999 adults from Country A, 1002…

A:

Q: Two samples were drawn, each from a normally distributed population, with the following results X1 =…

A:

Q: survey of 40 students at a local college asks, "Where do you buy the majority of your books?" The…

A: The objective is to develop a 99% confidence interval estimate of the proportion of all of the…

Q: m a random sample of 185 children from school G, 108 indicated they wanted to study science in…

A: The formula of the confidence interval for two proportion is: The formula of the standard error is:…

Q: The U.S. Department of the Interior is checking cattle on the Windgate open range in Montana. A…

A:

Q: Which of the following t values would be used to construct a 99% confidence interval for the mean…

A: Given: sample size n = 17 level of significance = 0.01 two tailed test

Q: The figure to the right shows the results of a survey in which 1003 adults from Country A, 1024…

A: Given information For country A p-hat = 0.35 n = 1003

Q: The figure to the right shows the results of a survey in which 1003 adults from Country A, 1024…

A: Given information For country A p-hat = 0.35 n = 1003

Q: A certain department store is interested in estimating the average amount its credit card customers…

A: According to our guidelines we can answer only first question and rest can be reposted.

Q: In a survey of 900 adults, 240 said that they watched the World Cup final on television. Using these…

A: Given, The sample proportion is,

Q: Of 500 randomly selected college students, 200 use a particular brand of mobile phone. Assuming that…

A: Given : x = 200 n = 500 p^=xn=200500=0.4The formula for confidence interval is :p^±zcp^(1-p^)n

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.