A university dean is interested in determining the proportion of students who recieve some sor of financial aid. Rather than examine the records for all students, the dean randomly selects 200 students and finds that 118 of them are receiving financial aid. If the dean wanted to estimate the proportion of all students receiving financial aid to within 4% with 90% reliabilty, how many students would need to be sampled?

Q: The use of the Internet is constantly growing. How many randomly selected adults must be surveyed to…

A: Solution

Q: Suppose 4 percent of the children in the US are thought to be near the juvenile diabetes threshold.…

A:

Q: A sample of students is collected by randomly selecting 20 students from each of the 58 community…

A: It is specified that 20 students from each of 58 community colleges are randomly sampled.The…

Q: The estimate is: _________ give or take___________ Fill in the blanks with the given options

A: Given that,

Q: In 1941, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you…

A: We have given that For the survey taken in 1941 n1 = 1100x1 = 374p̂ = x1/n1 = 151/429 = 0.3520 And…

Q: Nationally, 83% of Americans have earned a high school diploma.  We want to see if the proportion of…

A: We have to find sample proportion.

Q: Bopulation proportion of 1943 adults who were total abstainers and p, represent the population…

A: Solution: Given N1=1100,  X1=429 N2=1100,  X2=374 (α)= 0.05

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: A random sample of 1400 Internet users was selected from the records of a large Internet provider…

A: Given data A random sample of 1400 internet users was selected  and asked whether they would use…

Q: Suppose you select a simple random sample of 75 Douglas College students, and you find that 8 are…

A: The point estimate of the population proportion is the sample proportion. Given that, 8 out of the…

Q: Among 1815 randomly selected high school students surveyed by the Centers for Diseases Control, 300…

A: Given X=300 n=1815

Q: In your "Introduction to College Mathematics" class last semester, the instructor gave four tests.…

A: Given Scores90, 86, 70 , 80Possible sample size will be 1,2,3,4The data has been entered into excel…

Q: In a survey, 1000 respondents were asked about product preference. Of the interviewed, 65% favored a…

A:

Q: I want to estimate the proportion of college professors who believe in aliens. How many college…

A: It is given that margin of error (E) is 0.05 and the confidence level is 0.95.

Q: In a survey of 671 subjects, each was asked how often he or she watched TV. The survey subjects were…

A: Voluntary response sampling: In voluntary response sampling, the respondents select themselves into…

Q: A programmer plans to develop a new software system. In planning for the operating system that he…

A:

Q: In 1942 ​, an organization surveyed 1100   adults and​ asked, "Are you a total abstainer​ from, or…

A: The proportion of considered subjects, on which we are interested from a sample can be termed as…

Q: Why does this a situation call for a matched-pairs analysis?

A: Test is that whether there is difference between the measurements.

Q: A quality-conscious disk manufacturer wishes to know the fraction of disks his company makes which…

A:

Q: researcher decided to study the dietary habits of community college students. She did so in a way to…

A: Solution: The sampling methods can be classified into two types 1) Probability or random sampling…

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: Suppose 50% of all voters in a population support a politican, SHARE What is the zscore of sample…

A:

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

A: Let, X1= number of abstainer in the previous test n1= total sample size of the past test p1^ =…

Q: The proportion of all passenger who experiencing flight delay is sample statistics and can be…

A: Solution

Q: Suppose an internet marketing company wants to determine the percentage of customers who click on…

A: Margin of error=E=5%=0.05 , Confidence level=C.I=94%=0.94

Q: should their sample size be?

A: here use solvin's formula

Q: In 1944​, an organization surveyed 1100 adults and​ asked, "Are you a total abstainer​ from, or do…

A: We habe to find given proportion.

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: A programmer plans to develop a new software system. In planning for the operating system that he…

A: Obtain the sample size of a no preliminary estimate for p. The formula of sample size is, Use EXCEL…

Q: A newspaper infographic titled "Social Media Jeopardizing Your Job?" summarized data from a survey…

A: The following solution is provided below

Q: An educator desires to estimate, within 4%, the true percentage of high school students who study at…

A:

Q: Suppose an internet marketing company wants to determine the current percentage of customers who…

A: The objective of this question is to determine the sample size needed for a survey to estimate a…

Q: If 471 households were surveyed out of which 385 households have internet fiber cable, what is the…

A: Among 471 households 385 households have internet fiber cable, therefore 471-385 = 86 households…

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

A: X=35, n=50

Q: 1950, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you on…

A: In 1950, Total adults n1=1100                       x1=374 In recent year…

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.