In a recent poll, 310 people were asked if they liked dogs, and 40% said they did. Find the Margin of Error for this poll, at the 99% confidence level. Give your answer to four decimal places if possible.

Use the sample data and confidence level given below to complete parts​ (a) through​ (d).   A research institute poll asked respondents if they felt vulnerable to identity theft. In the​ poll, n=964 and x = 540 who said​ "yes." Use a 95% confidence level.

On a 5 question multiple choice test there are five possible answers, of which one is correct. Find the mean of the number of questions students guess correctly. Find the standard error of the number of questions guess correctly.

A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n = 1026 and x = 520 who said “yes." Use a 95% confidence level. Find the best point estimate of the population proportion p

A poll of 1200 people is taken. Find the margin of error assuming a 95% level of confidence.

In Statsville there’s a city-wide speed limit of 30 mph.If you are caught speeding the fine is $100 plus $10 forevery mile per hour you were over the speed limit. Forexample, if you’re ticketed for going 45 mph, your fine is100 + 10145 - 302 = +250. Last month all the driverswho were fined for speeding averaged 42 mph with astandard deviation of 7 mph. What were the mean andstandard deviation of the fines?A) $120 and $70 B) $220 and $7C) $220 and $70 D) $220 and $170E) $420 and $70

When 370 junior college students were surveyed, 145 said they have a passport.  Construct a 95% confidence interval for the proportion of junior college students that have a passport.  Round to 2 decimal places.

A survey was conducted that asked 1013 people how many books they had read in the past year. Results indicated that x=10.3 books and s=16.6books. Construct a 90​% confidence interval for the mean number of books people read. Interpret the interval.   Construct a 90​% confidence interval for the mean number of books people read and interpret the result. Select the correct choice below and fill in the answer boxes to complete your choice. ​(Use ascending order. Round to two decimal places as​ needed.)   A. There is a 90​% probability that the true mean number of books read is between ___ and ____   B. There is 90​% confidence that the population mean number of books read is between ___ and ____.   C. If repeated samples are​ taken, 90​% of them will have a sample mean between ___ and ___.

Please answer a, b, and d

.Studies have shown that approximately 5.3% of Americans have French heritage. You want to know how accurate this percentage is with 95% confidence and a margin of error of 3%. How many Americans you should randomly select