a survey of 3447 adults, 1477 say they have started paying bills online in the last year.   Construct a​ 99% confidence interval for the population proportion. Interpret the results.

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: Out of 100 people sampled, 56 had kids. Based on this, construct a 99% confidence interval for the…

A:

Q: In a recent poll, 540 people were asked if they liked dogs, and 10% said they did. Find the margin…

A: We have to calculate 95% confidence level margin of error for single proportion.

Q: poll reported 41% support for a statewide election with a margin of error of 1.72 percentage points.…

A: We have given that  Population proportion p =41%=0.41 Margin of error =E =1.72%=0.0172 90%…

Q: In a recent poll, 420 people were asked if they liked dogs, and 9% said they did. Find the Margin of…

A: Given: Sample size=n=420,Number of people who liked dogs:x=420×9100=37.8≈38,Significance…

Q: calculate the 95% confidence interval for the Presidential performance approval rating for a survey…

A: Solution: Let X be the number of people approved of the president’s performance and n be the number…

Q: If n = 240 and X = 192, construct a 90% confidence interval for the population proportion, p. Give…

A: Find z-critical value:…

Q: Construct a 95% confidence interval for the proportion of adults from the East who say traffic…

A: n = 400 p = 0.34

Q: Out of 400 people sampled, 336 preferred Candidate A. Based on this, estimate what proportion of the…

A:

Q: Out of 500 people sampled, 390 had kids. Based on this, construct a 99% confidence interval for the…

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

Q: Out of a sample of 760 people, 367 own their homes. Construct a 95% confidence interval for the…

A:

Q: magazine provided results from a poll of 1000 adults who were asked to identify their favorite pie.…

A: Given the handwritten solution

Q: In a survey of 464 registered voters, 143 of them wished to see Mayor Paz lose her next election.…

A:

Q: In a survey of 2313 adults, 714 say they believe in UFOs.   Construct a 90% confidence interval for…

A: Given, In a survey of 2313 adults, 714 say they believe in UFOs. n=2313 x=714 Sample proportion:…

Q: what is the margin of error if the confidence interval for the mean is 95<u<105

A: Given data, Lower limit=95 Upper limit=105 Margin of error(E)=?

Q: When 302 college students are randomly selected and surveyed, it is found that 122 own a car. What…

A: E have to find point estimate with with confidance interval..

Q: A magazine provided results from a poll of 500 adults who were asked to identify their favorite pie.…

A: The provided information is p=0.14q=1-p=1-0.14=0.86n=500E=3%=0.03p-Represents the proportion of…

Q: In a sample of 500 Canadians, 275 say they would rather retire in the US than in Canada. Calculate…

A:

Q: when 282 college students are randomly selected and surveyed, it is found that 109 own a car. find a…

A: It is given that sample size (n) is 282 and x is 109.

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

A: From the provided information, Margin of error (E) = 7% that is 0.07 Confidence level = 98% Assuming…

Q: in a recent poll, 130 people were asked if they liked dogs, and 46% said they did. Find the Margin…

A: Introduction: The 100 (1 – α) % confidence interval for the population proportion, p is: Here, n is…

Q: If n = 200 and X = 160, construct a 99% confidence interval for the population proportion, p. Give…

A: From the provided information Sample size (n) = 200 and x = 160

Q: In a survey of 1200 adults, 562 said that they plan to watch the next Olympics on television. Using…

A: Givenx=562n=1200p^=xn=5621200=0.4683confidence interval = 95%

Q: A marketing firm wanted to estimate the true proportion of protected homes today that have a home…

A: Given Data: n=280p∧=0.69   As "n" is large enough we will use normal approximation to calculate…

Q: If n = 420 and ˆpp^ (p-hat) = 0.75, construct a 99% confidence interval. Give your answers to three…

A: Solution: From the given information, p-hat=0.75 and n=420. The confidence level is 0.99.

Q: 82 adults selected randomly from one town, 66 have health insurance. Find a 90% confidence interval…

A:

Q: nutritionist

A: Please refer to the image below

Q: n = 480 and X = 384, construct a 90% confidence interval for the population proportion, p. Give…

A: Here is given that, n =480   x = 384 We will use one proportion  z confidence interval.

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: According to a poll of Americans, 79% say that if they had the evidence they would turn in a…

A: It is given that n = 305.

Q: In a recent poll, 530 people were asked if they liked dogs, and 95% said they did. Find the margin…

A: Given, n=530 p=0.95 Confidence level = 0.95 Critical value for 95% confidence level is 1.96.

Q: Suppose you are with a health agency that wants to estimate what percentage of Ohioans really has…

A: Given that the margin of error is 2%=0.02 Confidence level is 95% Therefore, the significance level…

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: Find a 95% confidence interval for the true population proportion.   In a poll of 1079 college…

A: The value of z at 95% confidence level is 1.96, which can be obtained by using the standard normal…

Q: Calculate a 95% confidence interval: Of the 998 respondents questioned, 246 identified themselves…

A: Given Data: x=246 n=998   p^=xn=246998=0.2465

Q: In a sample of 570 adults, 485 had children. Construct a 95% confidence interval for the true…

A: The sample size is 570. The number of successes is 485. We have to construct 95% confidence interval…

Q: In a recent poll, 390 people were asked if they liked dogs, and 83% said they did. Find the Margin…

A: We want to find the margin of error

Q: If n = 590 and ˆp = 0.94, construct a 95% confidence interval. Give your answers to three decimals…

A: If n = 590 and ˆp = 0.94, construct a 95% confidence interval.   Give your answers to three decimals…

Q: A transportation planner wishes to estimate the proportion of commuters who drive to work within…

A: There is no specific information about the value of p. Hence, we can consider p as 0.5. A…

Q: if n=320 and p^ (p-hat)=0.72, find the margin of error at 90% confidence level

A:

Q: US Adults, 2439 say they hve contributed to a charity in the past 12 months. Construct the 95%…

A: The value of z at 95% confidence level is 1.96, which can be obtained by using the standard normal…

Q: 6) When 415 college students were surveyed, 175 said they own their car. Construct a 95% confidence…

A: Given, The sample proportion is, Critical value: Using z-table, the z-critical value at the given…

Q: If n = 580 and X = 464, construct a 90% confidence interval for the population proportion, p. Give…

A:

Q: Suppose the English department of a local university has a  total of 105 faculty members. Of this…

A: Total faculty members in the university=105 Number of part time instructor=24 One proportion…

Q: Suppose the length of a confidence interval is ten. If the point estimate is forty-five, what is the…

A: It is given that the length of the confidence interval is 10 and the point estimate is 45.

Q: In 2013, the Gallup poll asked 1,039 American adults if they believe there was a conspiracy in the…

A:

Q: ​respondents, 12​% chose chocolate​ pie, and the margin of error was given as ±3 percentage…

A: Given: Among the 500 ​respondents, 12​% chose chocolate​ pie, and the margin of error was given as…

Q: sample of 200 adults, 126 had children. Construct a 90% confidence interval for the true population…

A: Given that  Sample size (n) = 200 Adults having children (x) = 126 Sample proportion (p) =…

Q: In a survey of 356 people who attended a local professional soccer teams most recent home game, 135…

A:

Q: If n = 560 and X = 448, construct a 95% confidence interval for the population proportion, p. Give…

A: The sample proportion is, p^=448560=0.80 The sample proportion is 0.80. Computation of critical…