98% of confidence; the sample size is 800, of which 25% are successes. find the margin of error
Q: Use the formula in this example to determine the sample size, n. The estimated prevalence is 16%,…
A: Given that p=16%=0.16 , Margin of error=E=5%=0.05 91% confidence level
Q: Use the formula in this example to determine the sample size, n. The estimated prevalence is 16%,…
A: given data p^ = 0.1691% ci E = 0.04n = ?
Q: Use the confidence interval to find the margin of error and the sample mean. (0.142,0.300) The…
A:
Q: In a recent poll, 450 people were asked if they liked dogs, and 48% said they did. Find the margin…
A: Total number of people = 450 Given that in a recent poll, 450 people were asked if they liked dogs,…
Q: Find the n amount, given that with a 95 percent confidence the error is by three percentage points…
A: Formula : Margin of error: ME=Zα/2 * √p̂(1-p̂)/n
Q: In a recent poll, 300 people were asked if they liked dogs, and 89% said they did. Find the margin…
A: Solution: From the given information, p-hat=0.89 and n=300.
Q: Use the confidence interval to find the margin of error and the sample mean. (0.392,0.490) The…
A: Given that, The confidence interval is 0.392, 0.490
Q: Find the margin of error and confidence interval for the percentage of U.S. adults who regularly use…
A:
Q: In a recent poll, 130 people were asked if they liked dogs, and 24% said they did. Find the margin…
A: Given, Total number of people = 130 Probability that a person likes a dog = 0.24 z value at 99%…
Q: Use the confidence interval to find the margin of error and the sample mean. (0.328,0.430) The…
A: Given data,Lower limit=0.328Upper limit=0.430
Q: A poll of 2929 U.S. adults found that 85% regularly used Facebook as a news source. Find the…
A:
Q: In a survey of 323 adults over 50, 60% said they were taking vitamin supplements. Find the margin of…
A:
Q: In a recent poll, 500 people were asked if they liked dogs, and 54% said they did. Find the margin…
A: Here we need to find the Margin of error corresponding to 95% confidence level.
Q: Use the confidence interval to find the margin of error and the sample mean. (0.186,0.350) The…
A: Solution: From the given information, the confidence interval is (0.186, 0.350).
Q: A poll of 2657 U.S. adults found that 86% regularly used Facebook as a news source. Find the margin…
A: Given that, n = 2657 Point estimate = sample proportion = = 0.86 1 - = 1 - 0.86 = 0.14
Q: A poll of 2977 U.S. adults found that 28% regularly used Facebook as a news source. Find the margin…
A: Solution: Given information: n = 2977 Sample size p^= 0.28 Sample proportion.
Q: In a recent poll, 600 people were asked if they liked dogs, and 58% said they did. Find the margin…
A:
Q: Use the given confidence interval to find the margin of error and the sample proportion.…
A:
Q: In a recent polI, 200 people were asked if they liked dogs, and 15% said they did. Find the margin…
A: From the provided information, Sample size (n) = 200 15% people said they like dogs that is p̂ =…
Q: Use the confidence interval to find the margin of error and the sample mean. (0.342, 0.460) The…
A: Here we have given confidence interval to find the margin of error and the sample mean. As (0.342,…
Q: Use the confidence interval to find the margin of error and the sample mean. (1.51,1.97) Margin…
A: Given confidence interval is (1.51 , 1.97)
Q: You want to estimate the percentage of small incorporated businesses that are owned by women. A…
A: The random variable percentage of small incorporated businesses follows binomial distribution. The…
Q: In a recent poll, 300 people were asked if they liked dogs, and 73% said they did. Find the margin…
A:
Q: n a recent poll, 330 people were asked if they liked dogs, and 30% said they did. Find the margin of…
A: given data, n=330p=0.30CI=0.99α=1-0.99=0.01ME=?
Q: A new fertilizer was applied to the soil of 222 bean plants. 28% showed increased growth. Find the…
A:
Q: In a recent poll, 289 people were asked if they liked dogs, and 17% said they did. Find the margin…
A: Let X be the number of people who liked dogs Given: Number of people or sample size (n) = 289…
Q: Use the confidence interval to find the margin of error and the sample mean. (0.676,0.800)
A: The margin of error is the most common term which we use in a confidence interval. It is the degree…
Q: In a recent poll, 260 people were asked if they liked dogs, and 32% said they did. Find the margin…
A: Find z-critical value:…
Q: Use the confidence interval to find the margin of error and the sample mean. (1.57,1.97)
A: The objective of this question is to find the margin of error and the sample mean using the given…
Q: In a recent poll, 250 people were asked if they liked dogs, and 21% said they did. Find the margin…
A: Sample size=n=250P=21%=0.2195% of confidence interval is
Q: Use the given confidence interval to find the margin of error and the sample proportion.…
A: Confidence interval (0.761,0.785)
Q: Use the confidence interval to find the margin of error and the sample mean. (0.614,0.690) The…
A: Given lower limit=0.614 Upper limit=0.690 The margin of error is ? The sample mean is?
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: recent poll, 250 people were asked if they liked dogs, and 52% said they did. Find the margin of…
A:
Q: Use the given confidence interval to find the margin of error and the sample mean. (4.81, 8.09)
A: The confidence interval is given by (4.81, 8.09)
Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…
A: Obtain the sample size of a no preliminary estimate for p. The formula of sample size is, Use EXCEL…
Q: A new fertilizer was applied to the soil of 123 bean plants. 85% showed increased growth. Find the…
A: Find z-critical value: For the two-tail test, Area on each tail. Area to the left of the normal…
Q: se the formula in this example to determine the sample size, n. The estimated prevalence is 19%,…
A: Given that,
98% of confidence; the
Step by step
Solved in 2 steps with 1 images
- A teacher worries her students are cheating. The teacher hopes to check a sample of students in order to estimate that percentage with a margin of error of 4% and 90% confidence. To gauge the size of the problem, the agency first picks 60 students and finds 12 are cheating. How many should be sampled for a full investigation?A poll of 2612 U.S. adults found that 15% regularly used Facebook as a news source. Find the margin of error and confidence interval for the percentage of U.S. adults who regularly use Facebook as a news source, at the 90% level of confidence. Round all answers to 2 decimal places. Margin of Error (as a percentage): Confidence Interval: _______% to ______% Find the margin of error and confidence interval for the percentage of U.S. adults who regularly use Facebook as a news source, at the 95% level of confidence. Round all answers to 2 decimal places. Margin of Error (as a percentage): Confidence Interval: ________% to ________% Find the margin of error and confidence interval for the percentage of U.S. adults who regularly use Facebook as a news source, at the 99% level of confidence. Round all answers to 2 decimal places. Margin of Error (as a percentage): Confidence Interval: ________% to ______% The more error we allow, the less precise our estimate. Therefore, as the confidence…A poll of 2368 U.S. adults found that 40% regularly used Facebook as a news source. Find the margin of error and confidence interval for the percentage of U.S. adults who regularly use Facebook as a news source, at the 90% level of confidence. Round all answers to 2 decimal places. Margin of Error (as a percentage): Confidence Interval: % to % Find the margin of error and confidence interval for the percentage of U.S. adults who regularly use Facebook as a news source, at the 95% level of confidence. Round all answers to 2 decimal places. Margin of Error (as a percentage): Confidence Interval: % to % Find the margin of error and confidence interval for the percentage of U.S. adults who regularly use Facebook as a news source, at the 99% level of confidence. Round all answers to 2 decimal places. Margin of Error (as a percentage): Confidence Interval: % to % The more error we allow, the less precise our estimate. Therefore, as the confidence level increases, the precision of our…
- A new fertilizer was applied to the soil of 239 bean plants. 11% showed increased growth. Find the margin of error and 95% confidence interval for the percentage of all bean plants which show increased growth after application of the fertilizer. Round all answers to 2 decimal places. Margin of Error (as a percentage): Confidence Interval:A poll of 2338 U.S. adults found that 71% regularly used Facebook as a news source. Find the margin of error and confidence interval for the percentage of U.S. adults who regularly use Facebook as a news source, at the 90% level of confidence. Round all answers to 2 decimal places. Margin of Error (as a percentage): Confidence Interval: % to % Find the margin of error and confidence interval for the percentage of U.S. adults who regularly use Facebook as a news source, at the 95% level of confidence. Round all answers to 2 decimal places. Margin of Error (as a percentage): Confidence Interval: % to %A new fertilizer was applied to the soil of 276 bean plants. 24% showed increased growth. Find the margin of error and 95% confidence interval for the percentage of all bean plants which show increased growth after application of the fertilizer. Round all answers to 2 decimal places. Margin of Error (as a percentage): Confidence Interval: % to
- A poll of 2338 U.S. adults found that 71% regularly used Facebook as a news source. Find the margin of error and confidence interval for the percentage of U.S. adults who regularly use Facebook as a news source, at the 99% level of confidence. Round all answers to 2 decimal places. Margin of Error (as a percentage): Confidence Interval: % to %In a recent poll, 500 people were asked if they liked dogs, and 72% said they did. Find the margin of error of this poll, at the 95% confidence level. Give your answer to three decimalsIn a recent poll, 100 people were asked if they liked dogs, and 90% said they did. Find the margin of error of this poll, at the 95% confidence level.Give your answer to three decimals
