A researcher wishes speeders who exceed the posted speed limit on a particular stretch of road in the Canyonlands National Park where there are frequent accidents. How large should the sample be so that with 98 percent confidence, the sample proportion will not differ from the true proportion by more than 0.195? mate the true proportion of all

Q: Each student drew a simple random sample of fifty students and created a 99% condfidence interval…

A: It is given that student has drawn a simple random sample of fifty students and created a 99%…

Q: How many students should be sampled in order to be 90% confident in estimating the proportion in…

A: Given that  Margin of error =E =0.10 90% confidence.

Q: If a 92% Confidence Interval for the Population Mean is (67.8, 78.9), find its Margin of Error.

A:

Q: What sample size is needed if a researcher needed to calculate the true proportion of individuals…

A: HERE , MOE  = 0.01 confidence level = 95% here z-critical for 95% confidence level = 1.96 here use…

Q: What sample size should be obtained if he wants to be within 4 percentage points with 95​%…

A: Given that the margin of error is 4 percentage points. That is, ME=4%=0.04 Confidence level =95% The…

Q: Suppose we wanted to estimate the average amount of sleep (in hours) a college student gets a night.…

A: Confidence interval : Confidence interval is a range of values it contains the true population…

Q: If n=590 and ˆp (p-hat) =0.81, find the margin of error at a 95% confidence level Give your answer…

A: Obtain the critical value: The confidence level is 100*(1–α)% = 95%. The critical value…

Q: A study found that 73% of elementary students buy lunch at school at least once a month. How large a…

A: Given,sample proportion(p^)=0.73margin of error(E)=0.03α=1-0.95=0.05α2=0.025Z0.025=1.96       (from…

Q: How large of a sample is required for a poll to have an error of less than 1.2% at a 90% confidence…

A: Given that  Margin of error =E =1.2%=0.012 90% confidence level.

Q: If the margin of error in an estimate for the mean weight of a shipment is + or -2 pounds at a…

A: From the provided information, The margin of error at a confidence level of 95 percent = ±2 The…

Q: How large of a sample is required for a poll to have an error of less than 1.5% at a 95% confidence…

A: Given:

Q: According to the American Cancer Society, in 2016 10.7% of the U.S. working population commute to…

A: From the provided information, In 2016, 10.7% of the U.S. working population commute to work by…

Q: Suppose that a 92% Confidence Interval for estimating the average heights, in inches, of all college…

A: confidence interval = x ± margin of errorlower limit = x - margin of errorupper limit = x + margin…

Q: What size sample should be used to estimate a population proportion within 0.02 with 80% confidence…

A: population proportion = P = 0.02 Level of significance = α = 0.02 population proportion is between…

Q: A federal report indicated that 17% of children under age 6 live in poverty in Nevada, an increase…

A: Given data, p=17%=0.17 E=2%=0.02 z-value at 99% confidence is Zc=2.576 n=?

Q: what would the 95% confidence limits for a sample of 120 with a mean of 51 and a standard deviation…

A: It is given that mean and standard deviation are 51 and 12, respectively.

Q: In a study of 120 randomly selected families, 50 said they streamed their television content. Find…

A:

Q: Suppose that we wanted to estimate the true average number of eggs a queen bee lays with 99%…

A:

Q: magine that you conduct a study and estimate that the prevalence of hypertension among employees of…

A: It is given that the estimated prevalence is 24%.

Q: How large a sample is necessary to estimate the true proportion of unmarried Canadians aged 25-29…

A: Given data: Margin of error  = 5% = 0.05 Confidence level  = 0.90 To find: Sample size (n) = ?

Q: A hospital administrator wants to estimate the proportion of patients whose hospital stay exceeds a…

A: Given Margin of error=0.06 P-cap=0.5

Q: A report statesb that 44% of home owners had a vegetable garden. how large a sample is needed to…

A: Answer: Using the given data, A report stated that 44% of home owners had a vegetable garden, P =…

Q: A statistical study is made to compare the % of smokers in small rural towns to the overall smoking…

A: Given Information:n=1500x=285c=95%=0.95

Q: In your sample of 200 individuals, 10 people identified as bisexual. What is the true proportion of…

A:

Q: Suppose you survey a random sample from a large population to understand the population proportion.…

A: Given information- Margin of error, E = 6% = 0.06 Confidence level, c = 98% Since nothing is known…

Q: In 2010, the proportion of Texans without health insurance was 0.11. To update this information a…

A:

Q: A confidence interval for the population mean was constructed and found to be (34.6, 66.6). What is…

A: The estimated statistic from the samples, which is assumed to be representative of the population…

Q: You would like to estimate the proportion of all residents in favor of a new law with 98%…

A: The sample proportion is 0.30, margin of error is 0.06, and the confidence level is 98%. Computation…

Q: Find the margin of error that corresponds to a sample of size 210 with 70% successes at a confidence…

A: Sample size is 210. Percentage of successes is 70%. Percentage of confidence level is 90%.

Q: What is the margin of error for a sample of 34 students whose average height, with 90% confidence,…

A: Confidence Interval: Confidence interval is the interval estimate of the population parameter. It is…

Q: If n=120 and p (p-hat) =0.31, find the margin of error at a 99% confidence level Give your answer to…

A: Sample size, n = 120 p^ = 0.31 99% confidence level

Q: In a survey of 2334 adults in a recent​ year,1370 say they have made a New​ Year's resolution.…

A: Given n=2334 X=1370

Q: n = 480 and X = 384, construct a 90% confidence interval for the population proportion, p. Give…

A: Here is given that, n =480   x = 384 We will use one proportion  z confidence interval.

Q: What are two ways to get a narrower confidence interval for a proportion?

A: Two ways to get a narrower confidence interval for a proportion are:

Q: Your professor wishes to estimate the proportion of ALL high school students enrolled in…

A:

Q: confidence interval for a population mean is (56,78), with a margin of error of 11. What is the…

A: From provided information, Confidence interval for population mean is (56, 78), with margin of error…

Q: a random sample of 25 children is selected and each is given several pieces of yummy gummy candy.…

A:

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.