Calculus and Above

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The percentage of high school graduates applying to multiple
The percentage of high school graduates applying to multiple colleges has been increasing over the past several years. According to an association in a certain​ region, 37​% of high school students ap… read more
Kofi
PhD in Statistics
Ph.D.
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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 percentage of high school graduates applying to multiple
The percentage of high school graduates applying to multiple colleges has been increasing over the past several years. According to an association in a certain​ region, 37​% of high school students ap… read more
MegaMath
Math Teacher
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
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According to a government​ agency, 49.2​% of mothers in a
According to a government​ agency, 49.2​% of mothers in a certain region were​ breast-feeding their nine​-month-old babies in 2016. Suppose a health insurance company would like to estimate the propor… read more
Kofi
PhD in Statistics
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At its peak after the 2007–2008 ​recession, credit card
At its peak after the 2007–2008 ​recession, credit card delinquency rates in a certain region reached 7.61​%. Since its​ peak, delinquency rates have declined to a new low of 1.59​% in the second quar… read more
Scott
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
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According to recent data by the American Marketing​
According to recent data by the American Marketing​ Association, 79.8​% of people in the​ 18-24 age group used social media in 2017. You want to find out what the social media proportion is among your… read more
Kofi
PhD in Statistics
Ph.D.
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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 percentage of high school graduates applying to multiple
The percentage of high school graduates applying to multiple colleges has been increasing over the past several years. According to an association in a certain​ region, 33​% of high school students ap… read more
Kofi
PhD in Statistics
Ph.D.
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A​ country's education department reported that in 2015​,
A​ country's education department reported that in 2015​, 71.7​% of students enrolled in college or a trade school within 12 months of graduating high school. In 2017​, a random sample of 150 individu… read more
Kofi
PhD in Statistics
Ph.D.
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A study done by researchers at a university concluded that
A study done by researchers at a university concluded that 70​% of all student athletes in this country have been subjected to some form of hazing. The study is based on responses from 1,700 athletes.… read more
Neo
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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.
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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.
34,762 satisfied customers
Pinworm: In a random sample of 830 adults in the U.S.A., it
Pinworm: In a random sample of 830 adults in the U.S.A., it was found that 80 of those had a pinworm infestation. You want to find the 95% confidence interval for the proportion of all U.S. adults wit… read more
Sandhya_sharma
Master's Degree
Master's Degree
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Jha... Thanks so much for your help previously. I have two
Good morning Jha... Thanks so much for your help previously. I have two questions (due to my lack of understanding of statistics - and because I need to check carefully before publishing, and also to … read more
R.R. Jha
Bachelor's Degree
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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
SusanAthena
Master's Degree
Master's Degree
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