Thirty five percent of adults Americans are regular voters.  A random sample of 250 adults in a medium sized college town were surveyed, and it was found that 110 were regular voters.  Estimate the true proportion of regular voters with 90% confidence and comment on your results

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Q: 4. Thirty-five percent of adult Americans are regular voters. A random sample of 250 adults in a…

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A: Given,          Sample proportion  P∧=0.09          Margin of Error∈=0.04          and…

Q: A random sample of 2,000 driver's license applications found that 17% reported their eye color as…

A: Solution: Given information: n= 2000 Sample size  p^= 0.17 Sample proportion Assumed Confidence…

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A: The hypothesized proportion is 0.38, n=500 and x=215.

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Q: In 1945, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you…

A: Null and alternative hypotheses: The hypothesis which is tentatively fixed up under and tested for…

Q: In another Harris poll, adults were asked if they are in favor of abolishing the penny. Among 200…

A: From the given information,                        Sample size (n) =200 Probability of success…

Q: An opaque jar contains 300 marbles, all either green or purple. Calista pulls out 10 marbles without…

A: # Given: no of marble in jar N=300  Sample of size n=10 drawn  No of purple marble in sample =2…

Q: A medical researcher wants to do a study on the proportion of knee replacement surgeries that result…

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Q: A hypothesis test is conducted to determine whether the percentage of US adults that think marijuana…

A: Given,n=400x=144p^=xnp^=144400=0.36

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Q: A large university has 24,000 student a randomly-selected sample of 750 students were surveyed  and…

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Q: A newspaper reported the results of a political poll about which candidate likely voters preferred,…

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

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A:

Q: You have been hired by a consortium of local car dealers to conduct a survey about the purchases of…

A: Given: Confidence level = 95% Margin of error = 0.03 Formula Used: n = ZαMargin of error2 p(1-p)

Q: For a sample of n=16 scores, how many scores are used to calculate the sample variance?

A:

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

A: Given Information :  A magazine provided results from a poll of 1000 adults who were asked to…

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A: Here use single proportion z test Only about 10% of all people can wiggle their ears. Is this…

Q: In 1949, an organization surveyed 1100 adults and asked, "Are you a total abstalner from, or do you…

A: Given : x1=374n1=1100p^1=0.34x2=330n2=1100p^2=0.30We want to find the value of test stitistic.

Q: A university dean is interested in determining the proportion of students who receive some sort of…

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Q: The sampling plan: n = 350 and c = 1, meets a confidence-reliability of (95%, 99%) A. True or False.…

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Q: Out of 400 people sampled, 260 preferred Candidate A. Based on this estimate, what proportion (as a…

A: Given info: Out of 400 people sampled, 260 preferred Candidate A. Based on this estimate, the…

Q: b. In the year 2000, a survey of 1171 U.S. adults were asked who they felt was the greatest…

A:

Q: A Pew poll taken in 2010 surveyed 830 people aged 18-29 and found that 166 of them had one or more…

A: State the hypotheses.

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A:

Q: A previous study showed that 69% of community college students have read a book for personal…

A: Given info: A previous study showed that 69% of community college students have read a book for…

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Q: A political scientist claims that 38% of first-year college students characterize themselves as…

A: The hypothesized proportion is 0.38.

Q: A Pew poll taken in 2010 surveyed 830 people aged 18-29 and found that 166 of them had one or more…

A:

Q: Camille believes that 50% of first-time brides in the United States are younger than their grooms.…

A:

Q: A university dean is interested in determining the proportion of students who receive some sort of…

A: Given: Confidence level=95%Margin of error E=2% From the Standard Normal Table, the value of z* for…

Q: A market researcher wishes to determine the proportion of American consumers who shop online for…

A:

Q: A radio talk show asks listeners to call in and say whom they are going to vote for in the next…

A: According to the provided information, a radio talk show asks listeners to call in and say whom they…

Q: A random sample of 40 students from each grade level was surveyed regarding their preference for a…

A: I have given an answer in step 2.

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.