Before the 2008 presidential campaign, the Gallup Poll asked a sample of 1,000 people for whom they would vote for president; 52% said Obama. The margin of error announced by news reports of this poll was   A. ± 2%.   B. ± 3%.   C. ± 8%.   D. ± 4%.   E. ± 6%

Q: In a recent Gallup poll, pollsters randomly selected adults and asked them whether they smoke.…

A: Introduction There are 2 types sampling methods: Prob. methods Non-Prob. methods

Q: 1. Use last digit of your student ID(I called it b) to do the following problem. Charges for…

A:

Q: Only 18% of registered voters voted in the last election. Will voter participation decline for the…

A: a. we should use z test for one sample proportion.

Q: Consider the following: at Bernhardt College, 200 (of the 3,000) students were polled and asked how…

A: From the given information, At Bernhardt College, 200 (of the 3,000) students were polled and asked…

Q: Do 8% of Dallas citizens commute to work? A survey on commuting by car was done on a random sample…

A:

Q: A polling company reported that 49% of 1013 surveyed adults said that rising gas prices are "quite…

A: We have to find correct answer..

Q: In a sample of 508 men who worked at home, 32% of them were college graduates. a.) Among the 508 men…

A:

Q: A researcher divided subjects into two groups according to gender and then selected 200 members from…

A: Since we know that In stratified sampling we divided homogeneous groups from the heterogeneous…

Q: A researcher wishes to estimate the number of households with two computers. How large a sample is…

A: Givenconfidence level = 90%Margin of error(E)=2%=0.02p^=0.45

Q: What is the sample proportion such that 95% of all others is symmetric around 36%?

A: 1. A sample of 200 students is taken in which 36% of all college students use an Apple i phone only.…

Q: We asked students in our class about the reading time per day. We got 57 responses (the sample size…

A: given data n = 57x = 4390% ci for p

Q: In a local election, 56.0% of those aged under 40 and 48.8% of those aged over 40 vote in favor of a…

A: Independent Events:Two events are said to be independent if occurrence of one event does not affect…

Q: On Sunday, July 19, 2020, FoxNews, the strongly conservative news organization, released a national…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three subparts…

Q: The college is planning to add a food vender in the student union and would like to know what type…

A: Given n=3

Q: Some states now allow online gambling. As a marketing manager for a casino, you need to determine…

A: given data, here proportion value is not given so assume that p=q=0.5E= no more than 3%E≤0.03n=?

Q: It has been estimated that only about 30% of California residents have adequate earthquake supplies.…

A: The sample size (n) is 13 and p = 0.30.

Q: During the first 13 weeks of the television season, the Saturday evening 8:00 PM. to 9:00 PM.…

A: Step 1:To determine whether the viewing audience proportions have changed, we can use the Chi-Square…

Q: sample of 2,500 people was asked how many cups of coffee they drink in the morning. You are given…

A: Given n=2500

Q: During the first 13 weeks of the television season, the Saturday evening 8:00 P.M. to 9:00 P.M.…

A: Null and alternative hypotheses: H0: P1=0.29, P2=0.28,P3 =0.24, P4=0.19Ha:Atleast one Pi do not…

Q: (a) What is the level of significance? State the null and alternate hypotheses. O Ho: The…

A: To test the claim that the census distribution and the sample distribution agree, we will use the…

Q: In a recent Gallup poll, 1003 randomly selected adults in the United States were asked if they have…

A: According to the provided information, 1003 randomly selected adults in the United States were asked…

Q: Draw a histogram to show candidate A got 32 votes, candidate B got 10 votes and candidate C got 20…

A: Given that Candidate A got 32 votes, candidate B got 10 votes and candidate C got 20 votes.

Q: 7. A study was conducted on parental empathy for sensitivity cues and baby temperament in infants.…

A: Given:n1=32, x1=69.44 and s1=11.69n2=32, x2=59 and s2=11.6…

Q: a. how many degrees of freedome are there in this table? b.how many cells are in this table? c.…

A: a. The degrees of freedom for the given table is, Thus, the degrees of freedom is 1.

Q: In a survey of 3012 adults aged 57 through 85 years, it was found that 81.2% of them used at…

A: Answer: From the given data, Sample size (n) = 3012 Percentage of adults aged 57 through 85 years in…

Q: according to the national household  survey on drug use and health, when asked in 2017, 31.0% of…

A: The National Household Survey on Drug Use and Health (NSDUH) is a comprehensive annual survey…

Q: A polling company reported that 53% of 2302 surveyed adults said that they play football. Complete…

A: a. It is given that, according to the survey 53% of 2302 surveyed adults said that they play…

Q: According to a​ newspaper, 58​% of high school seniors have a​ driver's license. Suppose we take a…

A: Sample size=n=200 Population proportion=p=58%

Q: In a survey of 3428 adults aged 57 through 85 years, it was found that 87.6% of them used at least…

A: From the provided information, Sample size (n) = 3428 It was found 87.6% of them used at least one…

Q: If 61% of Americans believe most school textbooks favor political correctness over accuracy, how…

A: Here we have given the information, 61% of Americans believe most school textbooks favor political…

Q: A polling organization contacts 1581 teenagers who are 16 to 19 years of age and live in North…

A: Population:   It is nothing but it is interest of set of all the objects or individual’s interest.…

Q: I would like to esCmate the proporCon of adults who own a pet. How many people should I poll in…

A: Given, c=0.94 and E=2%=0.02.

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.