Calculus and Above

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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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Master's Degree
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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​%. n=nothing ​(Round up to the nearest​ in… read more
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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
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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 = 2.5​, n = 13… 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) through​ (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the​ poll, n equals … read more
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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
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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
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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 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
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Ind the critical value tc for the confidence level
ind the critical value tc for the confidence level cequals0.98 and sample size nequals24.tc= ​(Round to the nearest thousandth as​ needed.)… read more
Kofi
PhD in Statistics
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Find the critical value z Subscript c necessary to form a
Find the critical value z Subscript c necessary to form a confidence interval at the level of confidence shown below. c=0.81… read more
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Find the margin of error for the given values of​ c, sigma​,
Find the margin of error for the given values of​ c, sigma​, and n. c=0.95​, sigma=2.2​, n=81. E=… read more
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Construct the confidence interval for the population mean
Construct the confidence interval for the population mean mu. c=0.90​, x=8.5​, sigma=0.4​, and n=41A 90​% confidence interval for mu is ​(Round to two decimal places as​ needed.)… read more
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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
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Master's Degree
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1. For estimating a population mean with the sample mean
1. For estimating a population mean with the sample mean find (i) the standard error of and (ii) the 100 (1-0x) error margin. Round answers to three decimal places. S.E. 98% error margin is 2. For est… read more
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3. A research institute polled asked repondents if they acted
3. A research institute polled asked repondents if they acted to annoy a bad driver. In the poll n=2410 and x=1020 who said that they honked. Use 95% confidence level. a. find the best point estimate … read more
Stevewh
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A researcher wishes to estimate, with 95% confidence
1. A researcher wishes to estimate, with 95% confidence, the percentage of adults who support abolishing the penny. His estimate must be accurate within 5% of the true proportion. Find the minimum sam… 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
Teacher
Bachelor's Degree
6,427 satisfied customers
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
Master's Degree
10,329 satisfied customers
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