A poll reported 42% support for a statewide election with a margin of error of 3.84 percentage points.   How many voters should be sampled for a 90% confidence interval? Round up to the nearest whole number.   ________ voters

Q: Out of 300 people sampled, 78 preferred Candidate A. Based on this, estimate what proportion of the…

A: From the given information,Out of 300 people sampled, 78 preferred candidate A.            So, here…

Q: A poll of 1,600 voters in one district showed that 56​% of them would favor stricter gun control…

A: In this case, the confidence level is 95%. The 95% confidence interval for the population proportion…

Q: In a recent poll, 410 people were asked if they liked dogs, and 32% said they did. Find the Margin…

A:

Q: Hearts College found that 50 students out of a sample of 600 students take the subway to school.…

A: Given data is fit for difference of proportions. we need to find the confidence interval for 90%.

Q: In a recent poll, 300 people were asked if they liked dogs, and 71% said they did. Find the Margin…

A:

Q: A research institute poll asked respondents if they felt vulnerable to identity theft. In the​ poll,…

A: Given , n = 1008 x = 598

Q: In a previous election, the confidence interval for the proportion of likely voters who would vote…

A: given;confidence interval for the proportion;(0.4401, 0.5199)i.e. (p^-E, p^+E)where  p^ : point…

Q: Provide an appropriate response. A researcher wishes to estimate the number of households with two…

A:

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

A: The formula for the sample size is as follows:

Q: 31% of 51 delegates in a political convention favored changing the rules to restrict the number of…

A: We have given that  Sample size n=51  Sample proportion p^=31%=0.31 90% confidence interval

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: 59% of 81 delegates in a political convention favored changing the rules to restrict the number of…

A: n= 81P^ = 0.59CI = 0.95P(-z < P <z) = 0.95∴z= 1.96    (∵ z- table)

Q: A recent survey of 349 people ages 18 to 29 found that 86% of them own a smartphone. Find the 99%…

A: The 99% confidence interval of the population proportion is obtained below as follows:   The formula…

Q: previous election, the confidence interval for the proportion of likely voters who would vote for…

A:

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.