A local school board wants to determine the proportion of households in the district that would support a proposal to start the school year a week earlier. They ask a random sample of 100 households whether they would support the proposal, and 62 households stated that they would. Assuming that conditions have been met, what is the 90% confidence interval for the true proportion of households that would support the proposal?

Q: 1) A sample of 532 Peanut Butter M&M's contains 74 yellow candies; write a 95% confidence statement…

A: In this case, the confidence level is 95%. The 95% confidence interval for the proportion/percentage…

Q: Suppose continuous variable X is uniformly distributed on an interval of length 4. The mean of the…

A: Given that  X~U(a,b) b=4 Mean =0.6726

Q: A poll reported 30% support for a statewide election with a margin of error of 3.96 percentage…

A: Given  p^=30%, margin of error=e=3.96% , Level of the significance=0.05

Q: poll reported 41% support for a statewide election with a margin of error of 1.72 percentage points.…

A: We have given that  Population proportion p =41%=0.41 Margin of error =E =1.72%=0.0172 90%…

Q: joint USA Today/CNN/Gallup Poll in July 2020 indicated that of 832 white adults, 46% thought…

A: Given n=832 P=0.46

Q: find the sample size needed to estimate the percentage of democrats who have tattoos. Use a 0.05…

A:

Q: Create and interpret a 90% confidence interval for the parameter of interest.

A: Let p be the population proportion of people who were interested in the new product line.Given…

Q: ment official is in charge of allocating social programs throughout the city of Vancouver. He will…

A: Given data, 25 have an annual income that is below the poverty line. x=25 He takes a simple random…

Q: A genetic experiment with peas resulted in one sample of offspring that consisted of 449 green peas…

A: Construct a 95​% confidence interval to estimate of the percentage of yellow peas. Find…

Q: A genetic experiment with peas resulted in one sample of offspring that consisted of 426 green peas…

A:

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

A:

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

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: A genetic experiment with peas resulted in one sample of offspring that consisted of 411 green peas…

A:

Q: It can be said that healthy and happy workers are more productive and efficient. A company that…

A: Given Data Sample Size, n = 250 confidence level,c= 0.99 Significance level,…

Q: A company reported that 72​% of 1691 randomly selected college freshmen returned to college the next…

A:

Q: When a recent survey asked subjects whether it should or should not be the​ government's…

A: The total number of subjects that is sample size (n) = 1496The number of subjects who said yes that…

Q: Suppose we observed 15 successes in a random sample of 60 subjects. What is the 99% confidence…

A:

Q: A retail store is considering adding a new product line to its inventory. The store wants to know…

A: The objective of the question is to understand the concept of a population parameter and whether it…

Q: A poll reported 37% support for a statewide election with a margin of error of 4.18 percentage…

A:

Q: An online grocery company is researching the best location to start their new delivery service. They…

A: Number of residents in region A, nA=505 Number of residents in region B, nB=388 Proportion of…

Q: input the smallest whole number (no decimal) that would fall outside a 95% confidence interval?  It…

A: Let  be the population mean.Given that,Sample mean Standard error of the mean Confidence level

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: A Roper Starch survey asked employees ages 25 to 34 whether they would prefer better health…

A: given data sample size (n) = 500favorable outcomes (x) = 34098% ci p.

Q: A restaurant owner, who owns fast food restaurants throughout Arkansas, Texas, and Oklahoma is…

A: Givensample size(n)=200x=118sample proportion(p^)=xn=118200=0.59confidence level=99%

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: In a random sample of 500  employees, 300 said they would like the company to adopt a flexible…

A: Given,n=500x=300p^ =xnp^=300500 =0.61-p^=0.4α=1-0.90=0.1α2 =0.05z0.05 =1.645

Q: If 64% of a sample of 550 people leaving a shopping mall claims to have spent over $25 create and…

A: Given,   Sample size = 550 Sample proportion = 0.64   Critical value: Using z-table, the z-critical…

Q: Construct the 95% confidence interval. Can you conclude whether or not a majority or minority of the…

A: When a recent survey asked subjects whether it should or should not be the government's…

Q: A genetic experiment with peas resulted in one sample of offspring that consisted of 412 green peas…

A: a) The 95% confidence interval to estimate the percentage of yellow peas is (23%, 31%) and it is…

Q: European Union countries report that 46% of their labor force is female. The United Nations wants to…

A: The 95% confidence interval is 0.357 to 0.443.

Q: In six attempts it took a looksmith 9, 14, 7, 8, 11, and 5 seconds to open a certain kind of lock.…

A: Given data: 9, 14, 7, 8, 11, 5 Confidence level = 95%

Q: A group conducted a poll of 2034 likely voters just prior to an election. The results of the survey…

A: The given data is as follows:Proportion of votes that candidate A will receive, Proportion of votes…

Q: decimal) that would fall outside a 95% confidence interval? It can either the upperbound or…

A: Let  be the population mean.Given that,Sample mean Standard error of the mean Confidence 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: A city is divided into 50 geographic subdivisions. An estimate was required of the proportion of…

A: The three random sample size is given as: 611, 521, 734. The no. of households who express in…

Q: In the past, 70% of a garage's business was with former patrons. Clarence Wade, the owner of the…

A: Solution: Given information: n= 600 Sample size  x = 432 Successes  p^=xn=432600= 0.72 Sample…

Q: genetic experiment with peas resulted in one sample of offspring that consisted of 412 green peas…

A: Given that  Sample size n = 412 + 151 n=563 Favorable cases x =151 Sample proportion p^=x/n…

Q: Telemarketers obtain names and telephone numbers from several sources. To determine whether one…

A: From the provided information,

Q: In a sample of 95 recommendations, it is found that 56% of them made money. Determine the upper…

A: Proportion is almost similar to the concept of probability. Proportion is a fraction of population…

Q: Suppose you are designing a survey of firework plans among Kansas residents. You would like for the…

A: Here we need to find the required sample size with a 95% confidence level to estimate the number of…

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.