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3737 Stats
Asked: Jan 15,2019In: Data Structure

A sample of employees is selected and it is found that 25% own a vehicle.

parameter statistics sample-statistic
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3737 Stats
Asked: Jan 15,2019 In: Data Structure
Answer
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0 Solutions
2528 Stats
Asked: Jan 15,2019In: Data Structure

In a poll of a sample of 12,000 adults in a certain city, 12% said they left for work before 6 a.m.

sample-statistic parameter
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0 Solutions
2528 Stats
Asked: Jan 15,2019 In: Data Structure
Answer
0 Vote
1 Solutions
3480 Stats
Asked: Jan 15,2019In: Data Structure

In a national survey on substance abuse, 66.4% of respondents who were full-time college students aged 18 to 22 reported using alcohol

statistic parameter sample-statistic
0 Vote
1 Solutions
3480 Stats
Asked: Jan 15,2019 In: Data Structure
Answer
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0 Solutions
1654 Stats
Asked: Jan 21,2019In: Data Structure

In conjunction with the housing foreclosure crisis, many economists expressed increasing concern about the level of credit card debt

parameter sample-statistic
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0 Solutions
1654 Stats
Asked: Jan 21,2019 In: Data Structure
Answer
0 Vote
1 Solutions
1535 Stats
Asked: Jan 22,2019In: Hypothesis testing

Assume that you have a sample of n1 = 4, with the sample mean X_bar1 = 48, and a sample standard deviation of S1 = 4

sample-mean hypothesis-test
0 Vote
1 Solutions
1535 Stats
Asked: Jan 22,2019 In: Hypothesis testing
Answer
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0 Solutions
855 Stats
Asked: Aug 13,2019In: Hypothesis testing

A study was conducted to assess the effects that occur when children are exposed to cocaine before birth. 190 children born to cocaine users had a mean score of 7.3

one sample t-test hypothesis testing
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855 Stats
Asked: Aug 13,2019 In: Hypothesis testing
Answer
1 Vote
0 Solutions
740 Stats
Asked: Aug 13,2019In: Hypothesis testing

To test the effectiveness of a drug to relieve asthma, a group of subjects was randomly given a drug and placebo on two different occasions.

paired one sample t-test
1 Vote
0 Solutions
740 Stats
Asked: Aug 13,2019 In: Hypothesis testing
Answer
1 Vote
0 Solutions
958 Stats
Asked: Aug 13,2019In: Hypothesis testing

A composition teacher wishes to see whether a new grammar program will reduce the number of grammatical errors her students make when writing a two page essay.

paired on-sample t-test
1 Vote
0 Solutions
958 Stats
Asked: Aug 13,2019 In: Hypothesis testing
Answer
0 Vote
0 Solutions
873 Stats
Asked: Aug 13,2019In: Hypothesis testing

Use the following data (representing hospital admissions from motor vehicle crashes) and an alpha of 0.05

one sample hypothesis testing
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0 Solutions
873 Stats
Asked: Aug 13,2019 In: Hypothesis testing
Answer
1 Vote
0 Solutions
957 Stats
Asked: Aug 17,2019In: Hypothesis testing

Eight students in a statistics class were asked to report the number of hours they slept on weeknights and on weekends

dependent samples t-test sample data and dependent sample t-test
1 Vote
0 Solutions
957 Stats
Asked: Aug 17,2019 In: Hypothesis testing
Answer

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