(a) A poll of 2,298 likely voters was conducted on the president’s performance. Approximately what margin of error would the approval rating estimate have if the confidence level is 95%? (Round your answer to 4 decimal places.)  Margin of error  _______            (b) The poll showed that 49 percent approved the president’s performance. Construct a 90 percent confidence interval for the true proportion. (Round your answers to 4 decimal places.)  The 90% confidence interval is from ______  to  _______   (c) Would you agree that the percentage of all voters opposed is likely to be 50 percent?   No, the confidence interval does not contain .50. Yes, the confidence interval contains .50.

Q: Suppose​ that​ 18% of a random sample of 2307 Miami residents said that they will donate blood in…

A: we have given that sample size =n=2307 ,sample proportion =p^=18%=0.18

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A:

Q: A poll reported that only 408 out of a total of 1549 adults in a particular region said they had a…

A: (a) Obtain the 95% confidence interval for the proportion that express a great deal or quite a lot…

Q: Construct a confidence interval of the population proportion at the given level of confidence. NOTE:…

A: The question is about confidence intervalGiven :For ( a ) part :No. of successes ( x ) = 105No. of…

Q: c)The confidence interval of the 95% Which built contradicts the ad claim? Choose the best answer…

A: Given population proportion, p = 42% = 0.42Sample size, n = 48Confidence level, C = 95% = 0.95Sample…

Q: Find the margin of error and 95% confidence interval for the following surveys. Round all answers to…

A: Given,Sample size(n)=500Sample proportion(p^)=0.42

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

A:

Q: In a survey of 2304 ​adults, 746 say they believe in UFOs.   Construct a 95% confidence interval for…

A: Solution: Let X be the number of adults who believe in UFOs and n be the sample number of adults.…

Q: A 95% confidence interval for the proportion p active voters in the municipality of Aibonito is 0.57…

A:

Q: 24 A jam manufacturer claims that the mean amount of jam in its 5-ounces jars is 5.1 ounces. A…

A:

Q: rouble locating the Sample proportion and confidence level

A: It is given that n = 2,321 and x = 719.

Q: calculate a 95% confidence interval for the population mean body temperature, based on the sample…

A: Given Information: Sample size n=130 Sample mean x¯=98.249 Sample standard deviation s=0.733

Q: A new fertilizer was applied to the soil of 238 bean plants. 34% showed increased growth. Find the…

A: Given Information : A new fertilizer was applied to the soil of 238 bean plants. 34% showed…

Q: d their candidate. State your answers as percents rounded to 1 decim

A: Here it is given that -  Of the 619 randomly selected likely voters surveyed, 305 supported their…

Q: A new fertilizer was applied to the soil of 199 bean plants. 48% showed increased growth. Find the…

A: Margin of error for proportion is given by, MOE= z*√pq/n Where P Is proportion and Q= 1-P n is…

Q: The “confidence interval” lying between +1 SEM and -1 SEM would give us a “confidence level”…

A: Empirical rule: The empirical rule with sample mean x¯  and sample standard deviation (standard…

Q: Find the margin of error and 95% confidence interval for the following surveys. Round all answers to…

A:

Q: You are interested in constructing a 95% confidence interval for the proportion of all caterpillars…

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 clinical trial of a certain drug, 27 subjects experience headaches among the 219 subjects…

A: From the given information,

Q: Form 90%, 95%, and 99% confidence intervals for the proportion of voters who favor the candidate.…

A: Given that Sample size n = 1000 Number of respondents favor the candidate, X = 214 The critical…

Q: A new fertilizer was applied to the soil of 222 bean plants. 28% showed increased growth. Find the…

A: Given Information: Sample Size, n =222Sample Proportion, p^=28% =0.28 To find out the margin of…

Q: A survey asked, "How important is it to you to buy products that are made in America?" of the 600…

A: Given:                              Number of favorable cases (x) = 150…

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A: The random variable percentage of small incorporated businesses follows binomial distribution. The…

Q: A magazine provided results from a poll of 2000 adults who were asked to identify their favorite…

A: It is given that among the 2000 respondents, 14% chose chocolate pie, and the margin of error was…

Q: In a survey of 299 randomly selected gun owners, it was found that 80 of them said they owned a gun…

A: From the provided information, Sample size (n) = 299 Out of which 80 said they owned a gun primarily…

Q: A survey of 240 individuals found that 1/3 of them use their cell phones primarily for e-mail.…

A: The random variable usage of cell phone follows binomial distribution. The sample size is 240. The…

Q: A new fertilizer was applied to the soil of 222 bean plants. 28% showed increased growth. Find the…

A:

Q: ou are a manager for a local convenience store. You want to determin proportion of your customers…

A: Given that  Margin of error =E=6.50%=0.0650 99% confidence.

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A: The known values are, P^=0.72, n=151. Using Standard normal table, the critical value for two-tailed…

Q: A confidence interval was constructed to approximate a population proportion. The interval was from…

A: Given Data Lower limit,LL = 12.5 upper limit,UL = 18.5

Q: You plan to conduct a survey to find what proportion of the workforce has two or more jobs. You…

A: Suppose p is the true population proportion of workforce has two or more jobs.

Q: Find the margin of error and 95% confidence interval for the following surveys. Round all answers to…

A: (a)   Obtain the margin of error at the 95% confidence interval.   The margin of error is obtained…

Q: Out of 200 people sampled, 176 preferred Candidate A. Based on this, estimate what proportion of the…

A: Numer of people sampled (n) = 200 Number of people who preferred candidate A (x) = 176 Find…

Q: ^ azine provided results from a poll of 2000 adults who were asked to identify their favorite pie.…

A: Given that  Sample size =2000 NOTE:- According to bartleby guidelines expert can solve maximum three…

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: ou are interested in constructing a 95% confidence interval for the proportion of all caterpillars…

A: Solution: Given information: n= 409 Sample size of caterpillars  x= 58  caterpillars become…

Q: Need asap. A magazine article conducted a survey of 1000 people in Washington State and found that…

A: A magazine article conducted a survey of 1000 people in Washington State and found that 26% of the…

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.