8. In a random sample of 400 voters, 208 support the new bonding bill. Find the 98% confidence interval for the true proportion of voters who support the bill. Interpret the interval.

Q: 2. Suppose that you take a random sample of 360 people who voted in the last election in a heavily…

A:

Q: recent poll, 470 people were asked if they liked dogs, and 40% said they did. Find the margin of…

A: The critical value at 99% confidence level from standard normal table will be:   Following…

Q: Suppose we want to estimate the proportion of teenagers (aged 13-18) who are lactose intolerant. If…

A: Given information Error = 4% = 0.04 Confidence level = 0.95

Q: If n=500 and p^ (p-hat) =0.13, find the margin of error at a 90% confidence level Give your answer…

A: Find z-critical value: For the two-tail test, Area on each tail. Area to the left of the normal…

Q: Compute the margin of error of the 90% confidence level when a = 3 and n= 30

A: Given that  ?=3 , n=30 Formula for margin of error  E=Zc*?/√(n)

Q: How many voters should be sampled for a 99% confidence interval? Round up to the nearest whole…

A: It is given that margin of error (E) is 0.0394 and the confidence level is 0.99.

Q: If n = 400 and X = 25, construct a 99% confidence interval estimate for the population proportion

A: It is given that Sample size n = 400 Numbervof sucessess, X = 25 The critical value of Z at 99%…

Q: If we want to be within 0.02 of the true proportion of homes that have a direct television receiver…

A: The population proportion is 82%, the confidence level is 98% and estimate is within 0.02.…

Q: If n=550 and ˆpp^ (p-hat) =0.25, find the margin of error at a 99% confidence level Give your…

A: The margin of error = The margin of error (ME) expresses to the maximum expected differences between…

Q: Suppose the 95% confidence interval for a population mean is (20.5, 35.5). What is the margin of…

A:

Q: Suppose we want to estimate the proportion of teenagers (aged 13-18) who are lactose intolerant. If…

A: Given information Error = 2% = 0.02 Confidence level = 0.95

Q: If n=280 and ˆpp^ (p-hat) =0.83, find the margin of error at a 99% confidence level Give your…

A: The margin of error = The margin of error (ME) expresses the maximum expected differences between…

Q: Find the 98% confidence interval for the cigarette tax in all 50 states.

A: Here use given sample data  And here population size is Finite N= 50

Q: If n=160 and ˆp (p-hat) =0.48, find the margin of error at a 99% confidence level

A: Given Data: p^=0.48n=160   We know that, p^-pp^(1-p^)n~ Normal(0,1)

Q: If n=490 and ˆpp^ (p-hat) =0.4, find the margin of error at a 90% confidence level Give your answer…

A: Given that, n = 490 p^=0.4 90% confidence level

Q: In a poll of 1000 randomly selected voters in a local election, 291 voters were against school bond…

A: From the provided information, Sample size (n) = 1000 291 voters were against school bond measures…

Q: A national polling organization wishes to generate a 98% confidence interval for the proportion of…

A: We need to find the sample size for the given interval.

Q: Suppose we want to estimate the proportion of teenagers (aged 13-18) who are lactose intolerant. If…

A: According to the provided information, The z score at 95% confidence interval from the standard…

Q: 2. A researcher wants to estimate the daily expenses of college students. He wants a 95% confidence…

A: We have given that,  Population standard deviation (σ) = 99.50, margin of error (E) = 45 and…

Q: 4.An internet service provider wishes to estimate, to within one percentage error, the current…

A: Given : Margin of error (E) = 1% = 0.01 Confidence level = 85% So , significance level (α) = 15% =…

Q: Ten engineering schools in the United States were surveyed. The sample contained 250 electrical…

A: Given that  n1=250 , X1=80 , n2=175 , X2=40

Q: If n=270 and p (p-hat) =0.93, find the margin of error at a 90% confidence level Give your answer to…

A:

Q: If n=120 and p (p-hat) =0.31, find the margin of error at a 99% confidence level Give your answer to…

A: Sample size, n = 120 p^ = 0.31 99% confidence level

Q: If n=110 and ˆpp^ (p-hat) =0.71, find the margin of error at a 90% confidence level Give your…

A: Sample size n = 110 Sample proportion p^ = 0.71 Confidence level = 90% Formula Used: Margin of error…

Q: If n=510 and p (p-hat) =0.47, find the margin of error at a 90% confidence level Give your answer as…

A:

Q: If n= 220, p-hat= .4, then what will be the 87.4% confidence interval for the population proportion?

A:

Q: If n=490 and ˆpp^ (p-hat) =0.46, find the margin of error at a 99% confidence level.Give your answer…

A:

Q: If n=13, = 42, and s=7, find the MARGIN OF ERROR at a 99% confidence level

A:

Q: If n=480 and ˆ p (p-hat) =0.64, find the margin of error at a 99% confidence level Give your answer…

A: Given that, Sample size, n = 480 p^=0.64 99% confidence level

Q: If n=440 andp (p-hat) =0.57, find the margin of error at a 99% confidence level Give your answer to…

A:

Q: If the sample portion is 0.448 What is the margin of error for the 95% Confidencelevel? 0.95 = 1.960…

A: Given that  Sample size n =1000 Favorable cases x =448 Sample proportion p^=x/n  =448/1000 =0.448

Q: If n=170 and ˆpp^ (p-hat) =0.23, find the margin of error at a 99% confidence level Give your…

A: Find z-critical value:…

Q: If n=490 and ˆpp^ (p-hat) =0.54, find the margin of error at a 90% confidence level Give your…

A:

Q: 1. In a poll of 2,500 likely voters, 966 say that the Philippines spend too little on education.…

A:

Q: If n=400 and X=100​, construct a 99​% confidence interval estimate for the population proportion

A: According to the given information, we have n = 400 X = 100 Confidence level = 99%

Q: If n=12, ¯xx¯(x-bar)=48, and s=6, find the margin of error at a 98% confidence level

A: From the provided information, Sample size (n) = 12 Sample mean (x̄) = 48 Standard deviation (s) = 6…

Q: If n=350 and ˆpp^ (p-hat) =0.64, find the margin of error at a 90% confidence level Give your…

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

Q: A university planner wants to determine the proportion of undergraduate students who plan to attend…

A:

Q: 19) A political survey had a margin of error of 4.25%. If the surveyor used a 90% confidence level…

A: Assume p-hat as 0.5, since no preliminary estimate is available.

Q: A survey of 100 students showed that 20 % of them planned to major in business. What is a 95 %…

A:

Q: (c) If the confidence levels were 98% rather than 80%, would the margin of error be larger or…

A: The confidence levels are 98% and 80%.

Q: 3: In a poll of 1000 likely voters, 560 say that the United States spends too little on fighting…

A:

Q: If n=480 and p^ (p-hat) =0.45, find the margin of error at a 90% confidence level Give your answer…

A:

Q: Suppose we estimated that 68 percent of Santa Fe students believe that black coffee is disgusting.…

A:

Q: A political researcher takes a survey of 310 randomly selected registered voters in Orlando, and…

A:

Q: In a poll of 2,300 likely voters, 966 say that the Philippines spend too little on education. Find…

A: We have given that the sample size n = 2300, favourable cases X =966 and sample proportion p =…

Q: When 258 college students are randomly selected and surveyed, it is found that 106 own a car. Find a…

A: The provided information is: It is given that 106 college students (s) own a car among 258 college…

Q: If n = 360 and p (p-hat) =0.88, find the margin of error at a 90% confidence level. Round to 4…

A: Find z-critical value:…

Q: If n=420 and ˆpp^ (p-hat) =0.19, find the margin of error at a 95% confidence level

A: