You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately ˆp=69%p^=69%. You would like to be 98% confident that your esimate is within 1% of the true population proportion. How large of a sample size is required? n =

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: Using Excel formula “=NORM.S.INV(1-(0.10/2))”, the 90% confidence level is zc = 1.645. As there is…

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Given Information: Population proportion p = 67% = 0.67 Confidence level = 90% = 0.90 Margin of…

Q: You are conducting a study to see if the proportion of voters who prefer Candidate A is…

A: GIVEN data, conducting a study to see if the proportion of voters who prefer candidate A  is…

Q: By how much the sample size n be increased if the width of the CI (T± za/2%) is to be halved? Show…

A: Given, The confidence interval is x¯±zα2σn Here, n is the sample size.

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Given: p*=0.36,E=0.015,α=1-0.999=0.001

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Given,sample proportion(p^)=0.881-p^=1-0.88=0.12margin of…

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Given information: Population proportion p=0.9 Confidence level = 97% Margin of error = 4%

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: Given Information: Confidence level = 80%  Error (e) = 0.05 Proportion (p) = 0.5 (assumed)  The z…

Q: n. How large of a sample size is required?

A: here MOE  = 0.03 p =0.28 z critical for 95% confidence level = 1.96 s

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: It is given that margin of error (E) is 0.03 and the confidence level is 0.80.

Q: You want to obtain a sample to estimate a population proportion. Based on previo believe the…

A: Let p* denote the population proportion. Given that p*=36%=36/100=0.36 The estimate is within 1.5%…

Q: Based on historical data at Oxnard College, we believe that 30% of freshman do not visit their…

A: Given Margin of error=E=0.05

Q: A random sample of medical files is used to estimate the proportion p of all people who have blood…

A: From the given information,Confidence level = 85%Margin of error =0.04

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: 1) Given,   Margin error = 0.01 Population proportion = 0.36   The objective is to find the sample…

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Since E=zpqnn=zE2pq

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: It is given that margin of error (E) is 0.04 and the confidence level is 0.99.

Q: true proportion of voters in favor of a referendum is unknown period a random sample of 200 voters…

A: Formula : Point estimate = p̂= x/n

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Givenpopulation proportion(p)=0.86Margin of error(E)=3%=0.03confidence level=99%

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Given: The population proportion is 0.69 and 99% confident is preferred within 2% of true population…

Q: uct a survey on your college campus to learn about the political awareness of students. You want to…

A: The critical value from standard normal table at 95% confidence level will be:

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: Question: You want to obtain a sample to estimate a population proportion. At this point in time,…

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A:

Q: ou want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Given,Sample proportion(p^)=0.331-p^=1-0.33=0.67margin of…

Q: An event marketing executive thinks that the proportion of consumers who have seen his company’s…

A: In general terms, the larger the sample size n, the more precise of an estimate can be obtained of…

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: sample size n=?

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Margin of error is given

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A:

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A:

Q: You want to obtain a sample to estimate a population proportion . Based on previous evidence, you…

A: Given data : Population proportion  = 0.81 Margin of error  = 0.05 Confidence level = 98%

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Given Data : Margin of error: ME = 0.001 sample proportion: p̂ = 0.18…

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A:

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: From the given information, Margin error (E) = 0.025 Assume sample proportion = 0.5   The objective…

Q: Identify the null and alternative hypotheses for this test.

A: Test is that whether the percentage of females aged 15 and  older who live alone has changed from…

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Solution: From the given information, confidence level is 0.95, p= 0.58 and E=0.05.

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A:

Q: na previous year, 58% of females aged 15 and older lived alone. A sociologist tests whether this…

A: Solution: Given information: n= 350 Sample size of females  x= 210 females are living alone…

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A:

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: n = Zα/2E2p(1-p)-------------Formula

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Given:

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: Here we need to find the required sample size to estimate the population proportion. Also no…

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: It is given that margin of error (E) is 0.035 and the confidence level is 95%.

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A:

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Find z-critical value. Given: Refer Standard normal table/Z-table OR use excel function…