Calculus and Above

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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
Kofi
PhD in Statistics
Ph.D.
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1. The average licensed driver travels 1,536 miles per month
1. The average licensed driver travels 1,536 miles per month in his or her vehicle. Assume the population standard deviation is 429 miles per month. Determine the interval that will contain 96​% of th… read more
Scott
Master's Degree
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1.The following distribution list displays the number of​
1.The following distribution list displays the number of​ no-shows for a particular flight and the historical probability that each number of​ no-shows will occur. A​ no-show is a person who has a res… read more
Scott
Master's Degree
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The cost of ink cartridges for inkjet printers can be
The cost of ink cartridges for inkjet printers can be substantial over the life of a printer. Printer manufacturers publish the number of pages that can be printed from an ink cartridge in an effort t… read more
MegaMath
Math Teacher
Master's Degree
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The following data show the costs charged by a tax
The following data show the costs charged by a tax preparation service for a random sample of 15 tax returns. Complete parts a through c. ​\$130 ​\$105 ​\$135 ​\$200 ​\$95 ​\$115 ​\$90 ​\$200 ​\$135 ​\$80 ​\$155… read more
Scott
Master's Degree
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Construct a​ 99% confidence interval to estimate the
Construct a​ 99% confidence interval to estimate the population mean using the data below. x=23 s=4.5 n=20 N=180 The​ 99% confidence interval for the population mean is ,. ​(Round to two decimal place… read more
Scott
Master's Degree
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Construct a 99​% confidence interval to estimate the
Construct a 99​% confidence interval to estimate the population mean using the accompanying data. What assumptions need to be made to construct this​ interval? x=67 σ=11 n=11 What assumptions need to … read more
Kofi
PhD in Statistics
Ph.D.
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Construct an 80​% confidence interval to estimate the
Construct an 80​% confidence interval to estimate the population mean when x=53 and s​ = 12.5 for the sample sizes below. ​a) n=25 ​b) n=43 ​c) n=65Determine the margin of error for a 95​% confidence … read more
Kofi
PhD in Statistics
Ph.D.
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A simple random sample of size n is drawn. The sample​ mean,
A simple random sample of size n is drawn. The sample​ mean, x overbarx​, is found to be 17.617.6​, and the sample standard​ deviation, s, is found to be 4.34.3. 1 Click the icon to view the table of … read more
Sandhya_sharma
Master's Degree
Master's Degree
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A simple random sample of size n is drawn from a population
A simple random sample of size n is drawn from a population that is normally distributed. The sample​ mean, x overbarx​, is found to be 110110​, and the sample standard​ deviation, s, is found to be 8… read more
Kimberley Wright
Masters
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A simple random sample of size n is drawn. The sample​ mean,
A simple random sample of size n is drawn. The sample​ mean, x overbarx​, is found to be 18.118.1​, and the sample standard​ deviation, s, is found to be 4.34.3. LOADING... Click the icon to view the … read more
Kimberley Wright
Masters
396 satisfied customers
What is the minimal sample size needed for a 95% confidence
What is the minimal sample size needed for a 95% confidence interval to have a maximal margin of error of 0.1 in the following scenarios? (For each answer, enter a number. Round your answers up the ne… read more
Kimberley Wright
Masters
396 satisfied customers
What price do farmers get for their watermelon crops? In the
What price do farmers get for their watermelon crops? In the third week of July, a random sample of 43 farming regions gave a sample mean of = \$6.88 per 100 pounds of watermelon. Assume that σ is know… read more
MunishK
Assistant Professor
M. Sc Mathematica
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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) through​ (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the​ poll, n equals … read more
Kofi
PhD in Statistics
Ph.D.
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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) through​ (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the​ poll, n equals … read more
Kofi
PhD in Statistics
Ph.D.
8,735 satisfied customers
Corn: In a prior sample of corn, farmer finds that 12% of
Corn: In a prior sample of corn, farmer Carl finds that 12% of the sample has worms but the margin of error for his population estimate was too large. He wants an estimate that is in error by no more … read more
Sandhya_sharma
Master's Degree
Master's Degree
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A simple random sample of size n is drawn. The sample​ mean,
A simple random sample of size n is drawn. The sample​ mean, x over bar x​, is found to be 19.4​, and the sample standard​ deviation, s, is found to be 4.9 (a) Construct a 9595​% confidence interval a… read more
Sandhya_sharma
Master's Degree
Master's Degree
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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
Teacher
Bachelor's Degree
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