A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 3 percentage points with 99​% confidence if he uses a previous estimate of 25​%(?) and if he he does not use any prior​ estimates?

Q: A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What…

A:

Q: A researcher wishes to estimate the proportion of adults who have high - speed Internet access .…

A:

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…

A: Margin of Error(E)=0.05For 99% confidence level Zα2=2.576 Formula; E=Zα2×(p×(1-p)n)

Q: 6. A researcher wishes to estimate the percentage of adults who support abolishing the penny. What…

A: a) Given, Margin error (E) = 0.03 Sample proportion = 0.34   The objective is to find the sample.…

Q: what size sample should be obtained if the estimate is to be within 0.01 with a 95% confidence if my…

A: Given,E=0.01p=0.32z-value at 95% confidence is Zc=1.96n=?

Q: a 95% confidence interval estimate for population mean is determined to be 75.38 to 86.52. if the…

A: We have  to find the confidence level is reduced to 90%, the confidence interval will....

Q: A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What…

A: It is given that margin of error (E) is 0.04 and the confidence level is 99%.

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…

A: It is given that margin of error (E) is 0.04 and the confidence level is 99%.Here,

Q: An apple, 37% of the people polled answered yes to the question "are you in favor of the death…

A: The provided information is: Sample proportionsp^=0.37 Margin of errorE=0.03 Level of…

Q: A nutritionist wants to estimate the difference between the percentage of men and women who have…

A: a. Computing the sample size: The confidence level is 90%. Therefore, α = 0.1,α/2=0.05 and 1-( α/2)…

Q: A New York Times article reported that a survey conducted in 2014 included 36,000 ​adults, with…

A: A margin of error could be a statistical measurement that accounts for the difference between actual…

Q: . What size sample should be obtained if she wishes the estimate to be within 0.04 with 90​%…

A: here given, p = 0.32 MOE  = 0.04 Z-score for 90% confidence level = 1.645 (  use Excel command…

Q: A researcher wishes to estimate the  proportion of adults who have high speed internet access. what…

A: Given Information: Error (e) = 0.02 Confidence level = 90%  The z score at 90% confidence level is…

Q: A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What…

A:

Q: A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What…

A: (a) Given that, Critical values: Using the z-table, the critical value at 95% confidence level is…

Q: A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What…

A:

Q: a random sample of 300 persons eating lunch at a department store cafeteria, only 102 had dessert.…

A: Provided data is, in a random sample of 300 persons eating lunch at a department store cafeteria,…

Q: A 90% confidence interval is to be found for the proportion of adult males that are married. Find…

A:

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…

A: a) Given,   Margin error = 0.02 Population proportion = 0.36   The objective is to find the sample…

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…

A: GivenMargin of error(E)=0.03confidence level(c)=99%α=1-0.99=0.01α2=0.05zα2=z0.05=1.6449   (from…

Q: A 95% confidence interval for a population mean was reported to be 152 to 160. If o = 15. what…

A:

Q: A company reported that 95% confidence interval for the proportion of household who already own a…

A: Z∝/2=1.96 Use Excel funtion: NORMSINV 0.025

Q: A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What…

A: The random variable is adults who have​ high-speed Internet access. It follows standard normal…

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny . What…

A: A) Sample size obtained when he uses a previous estimate of 32%. As given he wishes the estimate to…

Q: If you want to be 95% confident of estimating the population proportion to within a sampling error…

A:

Q: If you want to be 95​% confident of estimating the population proportion to within a sampling error…

A:

Q: We want to estimate, with a maximum error of .02, the true proportion of all senior medical students…

A: compute sample size ( n ) = n=(Z/E)^2*p*(1-p)

Q: A doctor wants to estimate the mean HDL cholesterol of all​ 20- to​ 29-year-old females. How many…

A: Given: Margin of error (E) = 2 Confidence level = 0.99 Therefore, α=1-0.99=0.01 Standard deviation…

Q: wishes the estimate to be within 0.04 with 95% confidence if (a) she uses a previous estimate of…

A: We have to find what size sample should be obtained if she wishes the estimate to be within 0.04…

Q: The American Heart Association is about to conduct an anti-smoking campaign and wants to know the…

A: Obtain the sample size. The formula of sample size is, Use EXCEL Procedure for finding the critical…

Q: A 95% confidence interval for a population mean was reported to be 152 to 160. If s = 15,what sample…

A:

Q: A researcher wishes to estimate the proportion of households that have broadband internet access.…

A: The following is the formula for calculation of sample size Where n is the required sample size P…

Q: A researcher wishes to estimate the proportion of adults who have high-speed internet access. What…

A:

Q: A researcher wishes to estimate the proportion of adults who have high speed internet access. What…

A:

Q: Bob wants a 95% confidence interval for the population mean. Previous research shows the population…

A: we have given that, population standard deviation (sigma) = 8, and margin of error =4 then we will…

Q: How many people should I poll to guarantee the actual error on qn is less than e, with 90%…

A: Given we dont know p, we use p = 0.5 to get a conservative value of the sample size as for p =0.5,…

Q: A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What…

A:

Q: Suppose we want to know what proportion p of students in a large university have studied calculus in…

A: Given,E=0.03z value at 95% confidence is Zc=1.96let the proportion be p=0.5n=?

Q: The estimated prevalence is 19% and the desired confidence is 93% with a margin of error of 4%.…

A: Given,margin of error(E)=0.04sample proportion(p^)=0.19α=1-0.93=0.07α2=0.035Z0.035=1.8119…

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny What size…

A:

Q: A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What…

A: Given information:Margin of error (E) = 0.04Confidence level=90%…

Q: In a random sample of 500 teenagers 12 to 17 years old, it was found that 330 have regular access to…

A:

Q: A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What…

A: Solution: a. From the given information, confidence level is 0.99, p=0.48 and E=0.03.

Q: The estimated prevalence is 25% and the desired confidence is 95% with a margin of error of 4%.…

A:

Q: A researcher wishes to estimate the proportion of adults who have high speed internet access  what…

A: formula for the sample size needed to estimate a population proportion is

Q: If a 95% Confidence for the Population Proportion is (0.56, 0.78), fınd its Margin of Error.

A:

Q: A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size…

A: a) Given that: p= previous estimate = 32% =0.32 e= error= 3%=0.03 z=critical value for confidence…

Q: The Department of Health and Human Services has been asked to estimate the proportion of "latch-key"…

A:

Q: A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What…

A: Given information: Margin of error(E)=0.03. Confidence level= 90%. α=1-0.90  =0.10 Zα2=Z0.102…

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.