Calculus and Above

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A population has standard deviation σ = 17.3. How large a
A population has standard deviation σ = 17.3.How large a sample must be drawn so that a 95% confidence interval for μ will have a margin of error equal to 1.4?If the required confidence level were 98%… read more
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Scott
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Twelve different video games showing substance use were
Twelve different video games showing substance use were observed and the duration of times of game play​ (in seconds) are listed below. The design of the study justifies the assumption that the sample… read more
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Find the sample​ size, n, needed to estimate the percentage
Find the sample​ size, n, needed to estimate the percentage of adults who have consulted fortune tellers. Use a 0.03 margin of​ error, use a confidence level of 90 ​%, and use results from a prior pol… read more
Sandhya
Sandhya
Master's Degree
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Use the given degree of confidence and sample data to find a
Use the given degree of confidence and sample data to find a confidence interval for the population standard deviation σ. Assume that the population has a normal distribution. Round the confidence int… read more
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Ryan
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1.find the minimum sample size required to estimate a population
1.find the minimum sample size required to estimate a population proportion or percentage. Fortune Tellers-Find the sample size needed to estimate the percentage of adults who have consulted fortune t… read more
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Ryan
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Show work.1. Redundancy in Aircraft Radios: The FAA requires
Show work. 1. Redundancy in Aircraft Radios: The FAA requires that commercial aircraft used for flying in instrument conditions must have two independent radios instead of one. Assume that for a typic… read more
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Ryan
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9. What is the minimum sample size you should use to assure
9. What is the minimum sample size you should use to assure that your estimate of pq5_7 will be within the required margin of error around the population p? Margin of error: 0.005; confidence level: 9… read more
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R.R. Jha
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Section 7-2: 32 Determine Sample Size. In exercise 32, use
Section 7-2: 32 Determine Sample Size. In exercise 32, use the given data to find the minimum sample size required to estimate a population proportion or percentage. FORTUNE TELLERS- Find the sample s… read more
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Please help with these 17 questions!! 1. Find the margin of
Please help with these 17 questions!! 1. Find the margin of error for the given values of c,s,and n. c=0.90,s=2.9,n=100 2. Construct the confidence interval for the population mean u. c=0.98,x=8.4,s=0… read more
Chirag
Chirag
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1. 36 randomly picked people were asked if they rented or owned
1. 36 randomly picked people were asked if they rented or owned their own home, 10 said they rented. What is the point estimate of the true proportion of home owners? (Points : 6) 0.722 0.217 0.278 0.… read more
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For questions needing a probability table, please use the table
For questions needing a probability table, please use the table with the value that starts 0.5000 not software or another table. I am having trouble with these last 7 questions. Please show your work … read more
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Scott
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Pg.431 1)The mean of the sampling distribution of means is
Pg.431 1)The mean of the sampling distribution of means is equal to the mean of the population. T-F, and why or why not? 2) In the formula for the Confidence Interval for the Mean, if the Confidence C… read more
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Find the margin of error for the given values of c, s, and
Find the margin of error for the given values of c, s, and n. C=0.95, s=2.3, n=49 E=_________ (Round to three decimal places as needed) Construct the confidence interval for the population mean µ. C= … read more
Stevewh
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16. In a survey of 630 males ages 18-64, 391 say they have
16. In a survey of 630 males ages 18-64, 391 say they have gone to the dentist in the past year. Construct 90% and 95% confidence intervals for the population proportion. Interpret the results and com… read more
Sandhya
Sandhya
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Find the margin of error for the given values of c, s, and
Find the margin of error for the given values of c, s, and n. C=0.90, s=3.9, n=49 E=_________ (Round to three decimal places as needed) Construct the confidence interval for the population mean µ. C= … read more
Chirag
Chirag
Master's Degree
Master's Degree
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Use the given data to find the minimum sample size required
Use the given data to find the minimum sample size required to estimate unknown population mean u. How many adults must be randomly selected to estimate the mean Fico score of working adults in the co… read more
Chirag
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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
SusanAthena
SusanAthena
Master's Degree
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a) From the information given here, determine the 95% confidence
a) From the information given here, determine the 95% confidence interval estimate of the population mean. Xbar = 100 σ = 20 n = 25 b) Repeat part (a) with xbar = 200. c) Repeat part (a) with xbar = 5… read more
Chirag
Chirag
Master's Degree
Master's Degree
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