A school administrator wishes to conduct a poll to estimate the percentage of full-time college students who have credit-card debt of $2000 or more. What size sample should be obtained if she wishes the estimate to be within 2.5% percentage points with 94% confidence if (a) a prior study indicates that the percentage is 34%? (b) no prior estimates are used?

Q: you have been assigned the task of conducting a survey to study prescription medication purchases of…

A: Given: Confidence Level = 0.95

Q: Your professor wishes to estimate the proportion of high school students enrolled in college-level…

A: Given: margin of error of 3.5 percent 99% confidenp p= 18.3%

Q: The North American Free Trade Agreement (NAFTA) enacted in 1994 is a trilateral trade agreement…

A: 1. Here, the sample contains n = 908 randomly selected adults of Country A who are at least 18 years…

Q: The North American Free Trade Agreement (NAFTA) enacted in 1994 is a trilateral trade agreement…

A:

Q: A group of researchers are studying the difference in ethical perceptions between male and female…

A: Given: The number of female students who responded no to cheat in order to get a high grade are…

Q: According to statistics reported on CNBC, a surprising number of motor vehicles are not covered by…

A: sample size(n)=218No. vehicles were not covered by insurance(x)=33

Q: A 2015 Gallup poll of 1,627 adults found that only 22% felt fully engaged with their mortgage…

A: Here the sample size is number of adults.

Q: College officials want to estimate the percentage of students who carry a gun, knife, or other such…

A: I have provided the solution below please do refer it and let me know if you have any queries…

Q: The personnel director of the Target Corporation wants to estimate the number of employees within…

A: Given that  Sample size n =80 Favorable cases x =4 Sample proportion p^=x/n  =4/80 =0.05

Q: In an October 2003 poll conducted by the Gallup organization, 684 of 1006 randomly selected adults…

A: Point estimate:The point estimate of population proportion is sample proportion.

Q: 2. Let sample proportion . How large a sample should be taken to be 95 % sure that the error of…

A: As per our guidelines we are supposed to answer only one question per post. Given that, margin of…

Q: A restaurant chain would like to measure the proportion of customers who are generally satisfied…

A: During a 1-week period, 147 customers were surveyed and 93% of them reported as being either…

Q: Given that the total sample of an FDT is 432, and the relative frequency of one of the classes is…

A: Total total relative frequency is add up to 100%  Here the  relative frequency of one class is…

Q: And a pool, 102 of 1020 randomly selected adults age 18 or older stated that they believe there is…

A:

Q: In 2006 the GSS had a special topic that investigated disabilities. They asked respondents if they…

A: Favorable cases (x) = 265 and sample size (n) = 2749 Then,  We will find the point estimate of the…

Q: A polling agency wants to determine the percentage of voters in favor of extending tax cuts. They…

A:

Q: An insurance company wishes to keep the error rates in medical claims at or below 5%. If there is…

A: Given information: An insurance company wishes to keep the error rates in medical claims at or below…

Q: A researcher wants to calculate the prevalence of Alzheimer’s among members of a specific community…

A: Solution: Given information: Margin of error = E= 0.01 Population proportion = p = 0.1073 Confidence…

Q: After consulting your marketing information system you mention at a meeting that your target markets…

A: Null and Alternate Hypothesis: H0: The distribution is same as market percentage HA: The…

Q: A television sports commentator wants to estimate the proportion of citizens who​ "follow…

A: Solution: From the given information, confidence level is 0.96 and E=0.02.

Q: A polling agency wants to determine the percentage of voters in favour of extending tax cuts. they…

A: Given information- Margin of error, E = 2% = 0.02 Confidence level, c = 95% Since nothing is known…

Q: 1) In a four-year psychedelic-mushroom experiment, 93 of the 300 subjects reported experiencing…

A:

Q: A Plitical pollster wants to know what proportion of voters think james burger should go away and…

A:

Q: Use these results from a USA Today survey in which 510 people choseto respond to this question that…

A:

Q: tourists

A: Here hypothesis testing of proportion

Q: A Polling agency wants to determine the percentage of waters in favour of extending tax cuts. they…

A:

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: Thirty-three percent of all Americans drink bottled water more than once a week (Natural resources…

A: Note: Hi there! Thank you for posting the question. Unfortunately in the sub-part(b), some required…

Q: The IRS is interested in estimating the total number of tax accounts who has their own tax returns…

A: A random sample of 100 returns showed that 15 were audited; n=100 x=15 α=0.95

Q: c)   If the scientists want to estimate the proportion of deer that carry Lyme disease ticks to…

A: We have given that,  Margin of error (E) = 0.02 and confidence level = 90% Then,  We will find the…

Q: Between 27 April 2020 and 10 May 2020, Gallup surveyed a random sample of 7,962 U.S. adults…

A: The sample proportion is 0.4705.

Q: In a 2021 poll by the Public Religion Research Institution, 2,508 Americans were asked if they agree…

A: Given: n = 2508 The margin of error E = 2.1 Formula Used: σ = EnZ

Q: elevision sports commentator wants to estimate the proportion of Americans who follow professional…

A:

Q: In the Star and Tribune newspaper, there is an article entitled “1 in 8 school buses fail tests."…

A: Given information: Sample of 200 buses and find that 20 buses fail the safety inspection. Let us…

Q: To determine the proportion of Americans who support affirmative action policies for minorities and…

A: The objective is to define the sample size for estimating the true proportion of Americans, who…

Q: A television sports commentator wants to estimate the proportion of citizens who​ "follow…

A: Given Data: Margin of Error=0.22 p=0.54   z-value=1.96

Q: San Gabriel office of statistics believes that the minimum salary of workers in the city is about…

A: One sample t-test: The one -sample t -test is used to determine whether the mean of sample differs…

Q: A sociologist wishes to conduct a poll to estimate the percentage of Americans who favor affirmative…

A: From the given information, she wants to use a 2003 estimate of 55% obtained from a Gallup Youth…

Q: oward revisions in the health care system. The president wants the estimate to be within 0.02 of the…

A: The  population proportion (p) of people that supports  health care revisions is given as 0.61.  The…

Q: You have been asked to estimate the proportion of households in Chicago that have two or more…

A: a) Given margin of error(ME)=4%=0.04 Confidence level=95% Significance level=5% The critical value…

Q: As Director of Student Services for the Lake County School District, you wish to estimate the…

A: X=35, n=50

Q: The North American Free Trade Agreement (NAFTA) enacted in 1994 is a trilateral trade agreement…

A:

Q: When writing the participant section for your formal report, you include only information that…

A: When writing the participant section for your formal report, you include only information that…

Q: If we construct a 95% confidence interval estimate for the true proportion of all Minnesota school…

A: here given, n = 200 sample proportion  =20200 = 0.1 here for z-critical use excel command…

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.