6 Answered Questions for the topic Mathxl

03/04/22

Topic 5 review of systems Question 22
Solve the system of equations using subtraction.2x-5y = 58x-5y = 35Question content area bottomPart 1The solution is enter your response here. ​(Type an ordered​ pair.)
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03/04/22

Topic 5 Review Systems Question 19
The sum of two numbers is 14. When the second number is subtracted from the first​ number, the difference is 10. Find the two numbers.Question content area bottomPart 1What are the... more
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Mathxl Math Statistics

08/09/20

construct a 90​% confidence interval estimate of the standard deviation of the wake times for a population with the drug treatments.

A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the​ drug, 17 subjects had a mean wake time of 93.6 min and a... more
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Mathxl Math Statistics

08/09/20

Use the sample data to construct a 95​% confidence interval estimate of σ​, the standard deviation of the duration times of game play
Twelve different video games showing substance use were observed and the duration of times of game play​ (in seconds) are listed below. The design of the study justifies the assumption that the... more
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Mathxl Math Statistics

08/09/20

Construct a 98​% confidence interval estimate of the standard deviation of body temperature of all healthy humans.
A simple random sample from a population with a normal distribution of 97 body temperatures has x=98.10°F and s=0.65°F. Construct a 98​% confidence interval estimate of the standard deviation of... more
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02/21/17

Sarah took the advertising department from her company on a round trip to meet with a potential client. Including Sarah a total of 9 people took the trip. She w
Sarah took the advertising department from her company on a round trip to meet with a potential client. Including Sarah a total of 9 people took the trip. She was able to purchase coach tickets for... more
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