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Construct the confidence interval for the population mean μ.
Construct the confidence interval for the population mean μ.c=0.90​, x=8.2​, σ=0.8​, and n=41… read more
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Assume that a sample is used to estimate a population
9. Assume that a sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level. Round the margin of error to four decim… read more
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. Assume that the weight loss for the first month of a diet
. Assume that the weight loss for the first month of a diet program varies between 6 pounds and 12 pounds, and is spread evenly over the range of possibilities, so that there is a uniform distribution… read more
Osbert12
Osbert12
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I have 3 statistics questions I need answers too within the
I have 3 statistics questions I need answers too within the next half hour. 1. Interpret a 99% confidence interval of (5.355, 5.445) for a population mean. 2. A school wants to estimate the true mean … read more
Osbert12
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1. )In a normal distribution with mu 25 and sigma 9, what
1. )In a normal distribution with mu = 25 and sigma = 9, what number corresponds to z = -2 2.) Let's assume you have taken 100 samples of size 64 each from a normally distributed population. Calculate… read more
Stevewh
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1. Given the following problem, (a.) set up a probability distribution
1. Given the following problem, (a.) set up a probability distribution table & (b.) find the mean and standard deviation to two decimals. The random variable x represents the number of foul shots a pl… read more
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The expected value of an unbiased estimator is equal to the
The expected value of an unbiased estimator is equal to the parameter whose value is being estimated. A) True B) False 2 All estimators are biased since sampling errors always exist to some extent. A)… read more
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find the qppropriate minimum sample size. you want to be 95%
Please who can get me a fast answer to any of these 16. Solve the problem. The following confidence interval is obtained for a population proportion, p: (0.707, 0.745). Use these confidence interval l… read more
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1. Use the given data to find the minimum sample size required
1. Use the given data to find the minimum sample size required to estimate a population proportion or percentage. Margin of error: Four percentage points; confidence level 90%; from a prior study, p(w… read more
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Statistics Class Quiz I need these answers in an hour! 1.
Statistics Class Quiz I need these answers in an hour! 1. (TCO 6) In the standard normal distribution, the variance is always (Points: 5) 0 1 2 none of these 2. (TCO 6) The area under the standard nor… read more
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1.A researcher wishes to estimate with 90% confidence, the
1.A researcher wishes to estimate with 90% confidence, the proportion of adults who have high speed internet access. Her estimate must be accurate within 4% OF THE TRUE PROPORTION. a)What is the minim… read more
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1. Given a level of confidence of 95% and a population standard
1. Given a level of confidence of 95% and a population standard deviation of 6, what other information is necessary: (A) To find the Maximum Error of Estimate (E)? (B) To find the sample size (n)? (C)… read more
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1.By measuring the amount of time it takes a component of a
1.By measuring the amount of time it takes a component of a product to move from one workstation to the next, an engineer has estimated that the standard deviation is 4.5 seconds. Answer each of the f… read more
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Interpret a 99% confidence interval of (5.355, 5.445) for a
Interpret a 99% confidence interval of (5.355, 5.445) for a population mean A nursing school wants to estimate the true mean annual income of its alumni. It randomly samples 200 of its alumni. The mea… read more
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Greg
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1.In a random sample of 25 people, the mean number of books
1.In a random sample of 25 people, the mean number of books they had read in the past year was 13.69 books and the standard deviation was 16.60 books. Assume the variable is normally distributed and u… read more
Stevewh
Stevewh
Bachelor's Degree
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1.You work for a consumer advocate agency and want to find
1.You work for a consumer advocate agency and want to find the mean repair cost of a washing machine. As part of your study, you randomly select 60 repair costs and find the mean to be $144. The sampl… read more
Stevewh
Stevewh
Bachelor's Degree
Bachelor's Degree
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1.Construct the 95% and 99% confidence intervals for the population
1.Construct the 95% and 99% confidence intervals for the population proportion p using the sample statistics below. Which interval is wider? If convenient, use technology to construct confidence inter… read more
abozer
abozer
Bachelor's Degree
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1.You are given the sample mean and the standard deviation.
***Statistics**Need the answers by 8pmEST 5/27/09******** 1.You are given the sample mean and the standard deviation. use this information to construct the 90% and 95% confidence intervals for the pop… read more
Greg
Greg
Master's Degree
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