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Ryan
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1). Assume that a random sample is used to estimate a population
1). Assume that a random sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level. 98% confidence, the sample size… read more
Stevewh
Teacher
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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
Chirag
Master's Degree
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A Gallup Survey conducted in January 2010 reported that 78%
A Gallup Survey conducted in January 2010 reported that 78% of regular air travelers approved of U.S. airports using full body scans on airline passengers. The sample size was 542. a. Construct a 95% … read more
dhouse1940
Retired
Master's Degree
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3. Find the margin of error for the given values of c, s, and
3. Find the margin of error for the given values of c, s, and n. c=0.95, s=3.1, n=49 E= ? ( Round to three decimal places as needed.) 4. You are given the sample mean and the sample standard deviation… read more
SusanAthena
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Master's Degree
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8. The life span of a battery is normally distributed, with
8. The life span of a battery is normally distributed, with a mean of 2300 hours and a standard deviation of 50 hours. What percent of batteries have a life span that is more than 2365 hours? What per… read more
Ryan
Bachelor's Degree
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For this problem, carry at least four digits after the decimal
For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. In a marketing survey, a random sample of 736 women shoppers revealed th… read more
SusanAthena
Master's Degree
Master's Degree
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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
Stevewh
Teacher
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In a random sample of six microwave ovens, the mean repair
In a random sample of six microwave ovens, the mean repair cost was \$90.00 and the standard deviation was \$14.00. Assume the variable is normally distributed and use a t-distribution to construct a 90… read more
Chirag
Master's Degree
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The new Twinkle bulb is being developed to last more than 1000
The new Twinkle bulb is being developed to last more than 1000 hours. A random sample of 100 of these new bulbs is selected from the production line. It was found that 48 lasted more than 1000 hours. … read more
Osbert12
Master's Degree
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2) construct the indicated confidence interval for the population
2) construct the indicated confidence interval for the population mean using a t-distribution. If you had incorrectly used a normal distribution, which interval would be wider? c= .90, x= 13.4, s= 2.0… read more
Osbert12
Master's Degree
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1) A mchine cuts plastic into sheets that are 30 feet 9360
1) A mchine cuts plastic into sheets that are 30 feet 9360 inches) long. Assume that the population of lengths is normally distributed. The company wants to estimate the mean lenth the machine is cutt… read more
Osbert12
Master's Degree
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1) Find the critical value Zc necessary to form a confidence
1) Find the critical value Zc necessary to form a confidence interval at the level shown. C=.95 (round to two places) 2) Find the margin of error. c= .95, s=3.6, n=100 (round to three decimal places) … read more
abozer
Bachelor's Degree
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. In a random sample of 26 computers, the mean repair cost
. In a random sample of 26 computers, the mean repair cost was \$130 with a sample standard deviation of \$36. Assume that the population is normally distributed. (References: example 2 and 3 pages 327 … read more
Scott
Master's Degree
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Problem 1) Use the given confidence level and sample data to
Problem 1) Use the given confidence level and sample data to find (a) the margin of error and (b) the confidence interval for the population mean u. Assume that the population has a normal distributio… read more
muvee
Master's Degree
1,030 satisfied customers
Hi please help!! thank you. 1-In a random sample of 26 people , the mean number of books they null read in the past year was 13.67 books and standard deviation was 16.60 bboks. Assume the variable is … read more
Stevewh
Teacher
Bachelor's Degree
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Construct the 95% and 99% confidence intervals for the population
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 the confidence int… read more
Elizabeth
Master's Degree
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5. The test scores for 12 randomly selected high school seniors
5. The test scores for 12 randomly selected high school seniors are shown below 1426 1221 984 692 725 831 722 748 547 624 1449 945 Assume the population is normally distributed. Find the sample mean x… read more
abozer
Bachelor's Degree
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