can you solve this question for me by showing it step by step for calculations? thanks in advance   A local council carries out a survey to determine the percentage of people in favour of Electric Vehicles (EV). In the survey, 43 people out of 75 were in favour of Electric Vehicles. a) Find the 90% confidence interval for those in favour of EVs in the whole population.  b) A second, larger survey is then carried out. In the second survey, 108 people out of 180 were in favour of Electric Vehicles. Find the 95% confidence interval for those in favour of EVs in the whole population

Q: A recent study of high school students shows the percentage of females and males who have at LEAST…

A: The (1-α)% confidence interval for the difference in population proportions p1-p2 is given by;…

Q: uring an election, Kevin and Britney took a poll of 1,200 voters, and asked what the most…

A:

Q: I've asked 91 students on Monday whether they did their homework over the weekend. 20 of them said…

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: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A:

Q: When constructing a confidence interval, if we construct a confidence interval with a 95% confidence…

A: The general formula for the width of the confidence interval is,

Q: A 95% confidence interval for the proportion p active voters in the municipality of Aibonito is 0.57…

A:

Q: Kim wants to determine a 99% confidence interval for the proportion of high school students in a…

A: We have given that,  Population proportion (p) = 0.53, margin of error (E) = 0.03 and confidence…

Q: You observe 60 customers at a coffee shop, and 82% of them tip. What is the 95% confidence interval…

A: Given : You observe 60 customers at a coffee shop, and 82% of them tip.

Q: Suppose I wanted to know the proportion of students who are paying attention in class, so I give a…

A: Confidence Interval for Proportion A confidence interval is a statistical method that denotes a…

Q: m what their favorite color was. 23 people said their favorite color is blue. Using this sample,…

A: Sample proportion is the fraction of successful samples and total number of samples. Here,  Total…

Q: What is the value of Z for this confidence interval?

A: Given,sample size(n)=14795no.of people who said yes=2219no.of people who said no =12576

Q: one with a 95% confidence level and the other with a 99.7% confidence level. Which interval is…

A: Confidence interval is probability, which refers that population parameter will fall within set of…

Q: You recently sent out a survey to determine if the percentage of adults who use social media has…

A: We have to find the confidence interval for population proportion (p) CI = p^ ±zα/2p^(1-p^)n Where,…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Solution:There is no estimates available, hence the sample proportion is assumed to be 0.50.The…

Q: A random sample of n1 = 262 people who live in a city were selected and 117 identified as a "dog…

A: Reviewing information, n1=262 x1 : No. of identified dog person in a city=117 n2=108 x2 : No. of…

Q: Part a and b

A:

Q: A confidence interval was constructed to approximate a population proportion. the interval was from…

A: From the provided information, The confidence interval was from 30.5% to 41.5%.

Q: The national average for the percentage of high school graduates taking the SAT is 49%, but the…

A:

Q: A researcher wants to estimate the actual proportion of citizens of a certain country who feel that…

A:

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A:

Q: A 95% confidence interval for the proportion of all statistics students from a large high school…

A: The objective of the question is to understand the relationship between the confidence level and the…

Q: Suppose we take a survey of 400 students and ask how much they study per week. The result is an…

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

Q: The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to…

A:

Q: Students at a certain college were asked if they have a car. After surveying 601 students, it was…

A:

Q: You want to determine if the proportion of people who will vote for the president next year has…

A: