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Determine the sample size n needed to construct a 90​%
Determine the sample size n needed to construct a 90​% confidence interval to estimate the population proportion when p=0.68 and the margin of error equals 8​%.At its peak after the 2007–2008 ​recessi… read more
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1.Find the critical value zα/2 that corresponds to a 93%
1.Find the critical value zα/2 that corresponds to a 93% confidence level.2.Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p.sample… read more
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Use the sample data and confidence level given below to
Use the sample data and confidence level given below to complete parts a-d. A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n=1088 and x=537 who sai… read more
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Question 1 Assume that the weight loss first month
Question 1 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 dis… read more
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FOR RYAN! 1. A banks loan officer rates applicants
FOR RYAN! 1. A bank's loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard deviation of 50. If an applicant is randomly selected, what is th… read more
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1. Item C in the description of the data collection instrument
1. Item C in the description of the data collection instrument lists variables 7, 8, and 9, which represent the respondent's general attitude toward each of the three shopping areas. Each of these var… read more
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1. If Z is a standard normal variable, what is the probability
1. If Z is a standard normal variable, what is the probability P(Z < 0.97)? (Points : 6) 0.8078 0.8315 0.8340 0.1660 Question 2.2. Assume that X has a normal distribution. The mean is 137.0 and the… read more
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5. Use the given degree of confidence and sample data to construct
5. Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p: n = 83, x = 45; 98 percent (Points : 6) 0.410 < p < 0.674 0.430 < p &… read more
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1. What is the point estimate of the true proportion of people
1. What is the point estimate of the true proportion of people who wear hearing aids if, in a random sample of 676 people, 35 people had hearing aids? (Points : 6) 0.050 0.052 0.948 0.049 Question 2. … read more
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9. What is the minimum sample size you should use to assure
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You answered similar questions previously but the data has
You answered similar questions previously but the data has slighly changed. Can you please provide details as to how you worked the problem? Thx #1 Find the sample size needed to estimate the percenta… read more
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1. The lengths of human pregnancies are normally distributed
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Can you help with my Elementary Statistics Quiz? If so, you
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i will also load the screen shot to media fire this one is
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Calculate the standard error. (Round your answers to 4 decimal
Calculate the standard error. (Round your answers to 4 decimal places.) Standard Error (b) n = 50, π = .20 (c) n = 100, π = .10 (d) n = 500, π = .005 Find a confidence interval for μ assuming that eac… read more
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Suppose that a 95% confidence interval for a population mean
Suppose that a 95% confidence interval for a population mean μ is given to be from 130 to 150. The 95% value in this statement indicates that: (choose the one best answer) a. P ( 130 < μ < 150 )… read more
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A 95% confidence interval of 15.9 months to 50.5 months has
A 95% confidence interval of 15.9 months to 50.5 months has been found for the mean duration of imprisonment,μ, of political prisoners of a certain country with chronic PTSD. a) Detemine the margin of… read more
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1.Assume that the weight loss for the first month of a diet
1.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
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