An epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential shortage of vaccines for the area. She will need to provide a recommendation for how to allocate the vaccines appropriately across the city. She takes a simple random sample of 332 people living in East Vancouver and finds that 31 have recently had the flu. Suppose that the epidemiologist wants to re-estimate the population proportion and wishes for her 95% confidence interval to have a margin of error no larger than 0.03. How large a sample should she take to achieve this? Please carry answers to at least six decimal places in intermediate steps.

Q: A government official is in charge of allocating social programs throughout the city of Vancouver.…

A: Given that  p=23/128=0.1797 E=0.03 95% confidence interval  Zc=1.96  ,at alpha=0.05

Q: If you need to make a 98% confidence interval for a proportion, and the margin of error is to be no…

A: Given information:  Confidence level = 98% Margin of error (e) = 0.025 Let proportion (p) = 0.5 The…

Q: A manager needs to know the proportion of employees who have insurance. He selects 200 employees and…

A:

Q: An economist at the Florida Department of Labor and Employment needs to estimate the unemployment…

A: From the provided information,Confidence level = 90%, 95% and 97%

Q: An epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential…

A: Given information- We have given that 35 have recently has the flu out of the random sample of 337…

Q: An economist is interested in studying the incomes of consumers in a particular country. The…

A: It is given that the standard deviation is 1,000. Margin of error, E is 50. The confidence level is…

Q: An epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential…

A:

Q: Ten years ago, according to government records, 17% of the population of Elmwood had no health…

A:

Q: ibojojwəpidə

A: To find : the sample size The minimum sample size requires to estimate the population proportion.…

Q: As Senior Class President, one of your lifelong duties is overseeing the planning of your high…

A:

Q: An epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential…

A: Sample of size n=334 people with favourable number of people had flu x=31 Then the proportion of…

Q: An epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential…

A: The random variable flu follows binomial distribution. X ~ B (n, p). The sample size is 337. The…

Q: If n=41n=41, ¯xx¯=36, and s=9s=9, find the margin of error for a 80% confidence level.

A: Answer - Given, Sample size n = 41,    x  = 36    and s = 9               80% confidence interval…

Q: A researcher wanted to check whether the percentage of Canadian adults with obesity has decreased in…

A: Number of Canadian adults in 2005= 75 Number of Canadian adults in 2009 = 120   significance level =…

Q: A government official is in charge of allocating social programs throughout the city of Vancouver.…

A: given data n=122x=20∴pointestimate for population proportion,p^=xn=20122=0.163934now…

Q: According to a past poll conducted of Lexington residents, 52% indicated support for a light rail…

A: Given, p^=0.52 n=400 α=1-0.95=0.05 As per z-distribution table, the critical value of z is obtained…

Q: In a study of government financial aid for college students, it becomes necessary to estimate the…

A: Solution: From the given information, confidence level is 0.95, p=0.40 and E=0.03.

Q: Refer to the following scenario. An epidemiologist is worried about the prevalence of the flu in…

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

Q: ccording to a past poll conducted of Lexington residents, 52% indicated support for a light rail…

A: Given: Sample proportion p^=52%=0.52 Sample size (n) = 400

Q: For many years businesses have struggled with the rising cost of health care. But recently, the…

A:

Q: An economist at the Florida Department of Labor and Employment needs to estimate the unemployment…

A: Sample size n = 356 Sample proportion p^ = 0.029   Formula  Used: Confidence Interval = p^ ± Margin…

Q: in epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential…

A: Sample of size n=330 people with favourable number of people had flu x=34 Then the proportion of…

Q: an epidemiologist is womied about the prevalence of the flu in East Vancouver and the potential…

A: Given data, n=331 x=33 E=0.05 z-value at 95% confidence is Zc=1.960 n=?   p=x/n=33/331=0.0997

Q: Suppose you calculate a 95% confidence interval for a proportion to to be: 0.39 to 0.78. Determine…

A: Given,   Lower bound = 0.39​ Upper bound = 0.78   Here, we use to determine the margin of error.

Q: An epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential…

A: given data, n=330x=30p^=xn  =30330  =0.090909CI=0.95E≤0.04n=?

Q: ou are a manager for a local convenience store. You want to determin proportion of your customers…

A: Given that  Margin of error =E=6.50%=0.0650 99% confidence.

Q: The clinical testing of drugs involves many factors. For example, patients that have been given…

A: Percentage = 100*Proportion We are given only one sample of size n=500, so we will not be using two…

Q: A government official is in charge of allocating social programs throughout the city of Vancouver.…

A:

Q: If we calculate a 95% confidence interval (CI) instead of a 99% confidence interval, then: A. The…

A: Here we need to choose from the correct option. We know that as the level of confidence decreases…

Q: Your state is considering raising the legal age for consumption of alcoholic beverages to 21 years…

A: p = 0.5 Margin of error = 0.01

Q: In a study of government financial aid for college​ students, it becomes necessary to estimate the…

A:

Q: Refer to the following scenario. An epidemiologist is worried about the prevalence of the flu in…

A: To find the sample size required for estimating the population proportion with a 95% confidence…

Q: An epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential…

A:

Q: We plan to sample parents in order to construct a 99% confidence interval for the proportion who…

A:

Q: Ve want to know how many people plan on buying a cell phone this year. Determine the sample size…

A:

Q: An economist at the Florida Department of Labor and Employment needs to estimate the unemployment…

A: Given data, p=2.4%=0.024 n=532

Q: n economist at the Florida Department of Labor and Employment needs to estimate the unemployment…

A: Given data,n=532proportion of residents were unemployed is p=2.4%=0.024

Q: You want to survey students to see what proportion of them have taken Statistics 101. This survey…

A: Margin of error(M) = 4% = 0.04 Confidence interval = 95%

Q: Suppose you are with a health agency that wants to estimate what percentage of Ohioans really has…

A: Given that the margin of error is 2%=0.02 Confidence level is 95% Therefore, the significance level…

Q: An epidemiologist is worried about the prevalence of the flu in East Vancouver and the potential…

A: Solution: Given : Sample size (n)=337 Sample proportion =P^=31337=0.09198813

Q: Your state is considering raising the legal age for consumption of alcohol beverages. How large a…

A: From the provided information, Margin of error (E) = 0.01 Confidence level = 99%

Q: According to a report on sleep deprivation by the Centers for Disease Control and Prevention, the…

A: From the provided information,

Q: If the population proportion is 0.7 . A researcher wants the margin of error to be 0.20 and the…

A: Given  pcap=0.7, Zcritical=1.96 at alpha=0.05 MOE=0.20

Q: When a population has less variability, for the same margin of error and confidence level, the…

A: As there is less variability standard deviation is also less and smaller standard deviation…

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.