A federal report indicated that 58% of children under age 6 live in poverty in Puerto Rico, an increase over previous years. How large a sample is needed to estimate the true proportion of children under age 6 living in poverty in Puerto Rico within 2% with 95% confidence? Round the intermediate calculations to three decimal places and round the final answer to the nearest whole number.Source: Federal Interagency Forum on Child and Family Statistics, Washington Observer- R eporter. n = ?

Q: Many states are carefully considering steps that would help them collect sales taxes on items…

A: From the given information,   Margin error = 0.06 Assume sample proportion = 0.5   The objective is…

Q: 110 students at a college were asked whether they had completed their required English 101 course,…

A: Total students = n = 110,  Number of students completed English 101 course = x = 81.

Q: A poll of 1,750 people suggested that 56% of respondents regularly watch tv shows through streaming.…

A: Given,n=1750p=0.56q=1-0.56=0.44

Q: find the margin of error in estimatingu at the 92% level of confidence.

A:

Q: 109 students at a college were asked whether they had completed their required English 101 course,…

A:

Q: 99 students at a college were asked whether they had completed their required English 101 course,…

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

Q: 104 concert-goers at the Glass House in Pomona, California were asked if they know how to play an…

A: Here it is given that- Number of concert goers  = 104 Number of concert goers who can play an…

Q: 103 students at a college were asked whether they had completed their required English 101 course,…

A: It is given that, 103 students at a college were asked whether they had completed their required…

Q: invested in bonds. For a = .10, does the test show enough evidence to declare that the proportion of…

A: Given: Sample size, n = 215 x = 91 Population proportion, p = 0.57  significance level

Q: Americans who believe the government should ensure basic health care is _________% with a margin of…

A:

Q: The engineering school at a major university claims that 20% of its graduates are women. In a…

A: Given, Given, Sample size= 201 No. of females(x)= 58 Sample portion(p̂)= x/n p̂=58/210=0.276 α= 0.05

Q: 110 students at a college were asked whether they had completed their required English 101 course,…

A:

Q: Recently, 18.3% of visitors to the Travelocity website hailed from the Google search engine. A…

A: It is given that Sample size n = 130 Population proportion p = 18.3% = 0.183

Q: versity is trying to determine how many of their students have watched a bystander intervention…

A: Given: Total number of students = 3500 Number of students included in the survey = 1050 Percentage…

Q: In fall 2014, 36% of applicants with a Math SAT of 700 or more were admitted by a certain…

A:

Q: The 12th percentile is (Round to two decimal plac

A: X~ N(μ=46 , σ= 7) then Z=X-μσ=X-467 ~N(0,1) Let P12 be the 12th percentile and is defined as P(X ≤…

Q: 129 students at a college were asked whether they had completed their required English 101 course,…

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

Q: 1. What is a quintile and what do the five quintiles represent in this document? 2. Using an eyeball…

A: 1) A statistical value of any data set representing 20% of the given population is a quintile. In…

Q: 80 students at a college were asked whether they had completed their required English 101 course,…

A: Given: In a college 80 students completed their English 101 course with 48 students being yes. To…

Q: 81 students at a college were asked whether they had completed their required English 101 course,…

A: Given,     The objective is to find the best point estimate for the proportion of students at the…

Q: An article in Fortune (September 21, 1992) claimed that nearly one-half of all engineers continue…

A:

Q: Which statistical measurement is used to measure minutes?  Is it ordinal, nominal or scaled?

A: Nominal: When the possible observations are tags or categories or names, without any natural…

Q: The Los Angeles City Controller's office calculated that in 2013, the city employed 47030 full-time…

A: Let p be the population proportion of full-time employees.

Q: According to the February 2008 Federal Trade Commission report on consumer fraud and identity theft,…

A: # Given: no of favourable cases x=321    total no of cases n=1432  then to find sample proportion…

Q: 130 students at a college were asked whether they had completed their required English 101 course,…

A:

Q: A random telephone survey of 1,081 adults (aged 18 and older) was conducted by an online tax…

A: Explanation: a). Total number of people surveyed = 1081 Number of people those file their taxes…

Q: A pollster wishes to estimate the true proportion of US voters who oppose capital punishment. How…

A: Given information Error = 3.5% = 0.035 Confidence level = 0.90

Q: Based on the Nielsen ratings, the local CBS affiliate claims its 11 p.m. newscast reaches 52% of the…

A: Givensample size(n)=100p^=0.47

Q: 81 students at a college were asked whether they had completed their required English 101 course,…

A: The number of students said yes (x) is 54 and the sample size (n) is 81.

Q: 94 students at a college were asked whether they had completed their required English 101 course,…

A: We have given that the total number of students at a college, n = 94 favourable number of cases, X =…

Q: A 2014 Pew Research Center Survey asked 2,002 adults about the intersection of politics and science.…

A: The provided information are:Number of trials (n) = 2002Number of successes (X) = 1281

Q: A recent study attempted to estimate the proportion of Florida residents who were willing to spend…

A:

Q: Another pilot study During routine screening, a doctornotices that 22% of her adult patients show…

A: Computing the sample size: The confidence level is 98%. Therefore, α = 0.02 and α/2=0.01. The margin…

Q: a survey showing the popularity of the current governor gives an approval rating between 42% and…

A:

Q: A poll found that 70 people out of a survey of size 127 watch at least three hours of TV per day…

A: Given  sample size n = 127 X : Number of people watch tv at least three hour per day X = 70

Q: Estimate the 97.5 percentile of 1996 verbal SAT scores. Refer to

A: From the given information, μ=505σ=110 Consider, the 16th percentile:…

Q: a hospital wants to estimate the percentage of admitted patients who receive Medicare benefits. if…

A: To calculate the minimum sample size require to be 95% sure that margin of error will fall within 4…

Q: 82 students at a college were asked whether they had completed their required English 101 course,…

A:

Q: In fall 2014, 34% of applicants with a Math SAT of 700 or more were admitted by a certain…

A: All the given data is shown in the tree diagram

Q: 85 students at a college were asked whether they had completed their required English 101 course,…

A: Best point estimate:The best point estimate of population proportion is the sample proportion.

Q: An article in Fortune (September 21, 1992) claimed that nearly one-half of all engineers continue…

A: Given: x=117n=484p=0.5α=0.05

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: 140 students at a college were asked whether they had completed their required English 101 course,…

A: Here given that, Sample size is n= 140 And we need to find proportion for 83 students.  So x= 83

Q: 104 students at a college were asked whether they had completed their required English 101 course,…

A:

Q: 101 students at a college were asked whether they had completed their required English 101 course,…

A:

Q: 88 students at a college were asked whether they had completed their required English 101 course,…

A: Given: Total number of students in college were asked whether they had completed their required…

Q: On a recent Washington to London flight with 300 passengers, it was found that 100 passengers were…

A:

Q: An article in Fortune (September 21, 1992) claimed that nearly one-half of all engineers continue…

A: Givenx=117n=484p^=xn=117484=0.2417

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.