Create a 90% confidence interval for a population proportion from a sample of size 86 with sample 39 proportion p = 86 [three decimal accuracy] [three decimal accuracy]

Q: A 95% confidence interval for the proportion of cars on the road in the Germany that have automatic…

A: The 95% confidence interval for the proportion of cars on the road in the Country G that have…

Q: 3. Find the critical value corresponding to a 90% confidence interval for a population mean with an…

A: 3) It is given that sample size is 15.

Q: From a random sample of 25 days in a recent year, gasoline prices had a mean of 51.25 pesos and a…

A:

Q: Determine the point estimate of the population mean and margin of error for the confidence interval…

A: To find: 1. Point estimate for population mean 2. Margin of error for population mean

Q: 2) A random sample of 56 fluorescent light bulbs has a mean life of 645 hours. Assume the population…

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Q: (a) The minimum sample size required to construct a 90% confidence interval is O cans. (Round up to…

A: a) Given : Margin of error, ME = 0.6 Sample Mean , x̄ = 126.5 population standard…

Q: From a random sample of 64 high school seniors, the sample mean and standard deviation of the math…

A: Given,sample size(n)=64sample mean(x)=90standard deviation(s)=7degrees of…

Q: Find the sample size required to develop an 86% confidence interval on a population proportion that…

A: Given information’s areConfidence interval = 86%Margin error = 5.5%Margin error = 0.055Proportion…

Q: A random sample of 100 Colorado residents is selected, and it is found that 82% of them have Subaru.…

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Q: Find the critical value corresponding to a 95% confidence interval for a population mean with an…

A: The confidence level is 0.95.

Q: A sample of 36 men has a mean weight of 175 pounds with a sample standard deviation of 13 pounds.…

A: It is given that sample mean is 175 and standard deviation is 13.

Q: Construct an 80% confidence interval for the average quantity of water consumed at a coffee on the…

A: It is given that  Sample mean, x̄ = 52.1 Sample standard deviation, s = 4 Sample size, n = 50…

Q: What is the minimum sample size needed to construct a 95% confidence interval of the population…

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

Q: A random sample of size n = 25 yield a sample mean of 50 and standard deviation of 8. Calculate the…

A: Hello! As you have posted 2 different questions, we are answering the first question (4-2). In case…

Q: 3) A factory produces batteries that have a lifetime that is approximately normally distributed with…

A: In question, We have given the population standard deviation of 40 hours and sample of 30 batteries…

Q: A large-sample 98% confidence interval for the proportion of hotel reservations that are canceled on…

A: From the provided information, Confidence level = 98% Confidence limits = (0.048, 0.112)

Q: A random sample of 40 home theater systems has a mean price of $500 and a standard deviation of $60.…

A: Construct the 99% confidence interval for the population mean The 99% confidence interval for the…

Q: A sample of 35 different payroll departments found that employees worked an average of 240.6 days a…

A: Given that  Sample size (n) =35 Employed worked an average of 240.6 days a year x¯ = 240.6 days…

Q: Form a 90% confidence interval on the difference in the means. population std dev group mean 6.

A: Given,    Group n Mean Population standard  deviation 1 30 20.5 1.5 2 30 14.5 1.5

Q: Suppose a sample of 30 LCC students are given an IQ test. The sample has a standard deviation of…

A: Given the following information- n=30s=12.24s2=149.82

Q: A sample of size n = 20 is drawn from an approximately normal population whose standard deviation is…

A:

Q: What sample size is necessary such that a 95% confidence interval for the mean, using σ = 3, has a…

A: We have to find the necessary sample size such that a 95% confidence interval for the mean, using σ…

Q: Determine the value of the z* multiplier that would be used to compute an 75% confidence interval…

A: Determine the value of the Z* multiplier that would be used to compute an 75% confidence interval…

Q: Recent data from a national survey indicated that the average woman goes to a salon once every five…

A: We have given that the average woman goes to a salon once every five weeks and spend on average…

Q: In a random sample of 500 people aged 20-24, 20% were smokers. In a random sample of 450 people aged…

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Q: Determine the sample size needed to construct a 96% confidence interval to estimate the average…

A: Given  The confidence level     =   96% Margin error                 =   $100 Standard deviation…

Q: A random sample of 87 airline pilots had an average yearly income of $99,400 with a standard…

A: From the given information, the sample mean is 99,400, standard deviation is 12,000 and sample size…

Q: Determine the sample size necessary to construct a 85% confidence interval with an error of 0.72 if…

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Q: A sample of size 78 produced the sample mean of 16.4. Assuming the population standard deviation…

A: It is given that Sample size n = 78 Sample mean M = 16.4 Population SD = 3.3 The critical value of Z…

Q: A random sample of 89 observation produced a sample mean 25.8 and given population standard…

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Q: A random sample of 89 observation produced a sample mean 25.8 and given population standard…

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Q: A sample of 20 body temperatures resulted in a mean of 98.3° and a standard deviation of .24°. Use…

A: From the provided information, Sample size (n) = 20 Mean (x̄) = 98.3 Standard deviation (s) = 0.24…

Q: 10 samples of coal from a Northern Appalachian source had an average mercury content of 0.242ppm…

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Q: Compute a 95% confidence interval for the difference between the proportion of students favoring…

A:

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A: Let X be the random variable such that the height of college football players. σ : The population…

Q: Find the critical value needed to construct a 99% confidence interval of the population mean with…

A: To find the critical value needed to construct a 99% confidence Interval of the population mean:…

Q: A random sample of 121 observation produced a sample mean 27.9 and given population standard…

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Q: A sample size of 100 from a population having a standard deviation =8 produced a mean of 40. The 99%…

A: Obtain the 99% confidence interval for the population mean. The 99% confidence interval for the…

Q: Determine the sample size necessary to construct a 90% confidence interval with an error of 2.65 if…

A: Sample Size: Sample is a small number of individuals or observations and it is a part of the…

Q: A sample of size n=20 is drawn from an approximately normal population whose standard deviation is…

A:

Q: Assume that a sample is used to estimate a population proportion p. Find the 99.5% confidence…

A: Solution: From the given information, p=0.85, n=201 and the confidence level is 0.995.

Q: Determine the most conservative sample size for 95% confidence interval estimar of the population…

A: Given data, E=0.04 z-value at 95% confidence is Zc=1.96 Let proportion be p=0.50 n=?

Q: What is the smallest sample size that guarantees that the margin of error is less than 3% when…

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Q: A sample of size 25 drawn from a normally distributed population has a sample mean 12 and a sample…

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Q: Determine the sample size necessary to construct a 90% confidence interval with an error of 0.08 if…

A: Given E=0.08

Q: A 92% confidence interval for the mean number of cucumbers a plant produces per season was…

A:

Q: A sample of 120 students yielded a sample mean GPA of 3.35, end a sample standard deviation equal to…

A: Obtain the 95% confidence interval for the population mean GPA. The 95% confidence interval for the…

Q: A consumer agency estimate the proportion of all drivers who wear seat belts while driving. What is…

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Q: 2.2% is your desired margin of error in percentage points. Find the sample size required to develop…

A: Proportion value p is not provided but as is the norm, we will assume p =0.5.

Q: 1. A random sample of 12 kindergarten students yielded a mean weight of 26kg with sample standard…

A: Given that  1. A random sample of 12 kindergarten students yielded a mean weight of 26kg with sample…

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.