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QUESTION According to a survey, the average American person watches TV for 3 hours per week....
According to a survey, the average American person reads for 3 hours per week. To test...
According to a survey, the average American person reads for 3 hours per week. To test if the amount of reading in Chicago is more than the national average, a researcher decides to do a hypothesis test, at a 5% significance level. She surveys 17 Chicagoans randomly and asks them about their amount of TV each week, on average. From the data, the sample mean time is 3.4 hours per week, and the sample standard deviation (s) is 0.8 hours....
cording to a survey, the average young adult male plays video games for 4 hours per...
cording to a survey, the average young adult male plays video games for 4 hours per week. To test fthe amount of video male plays video games for 4 hours per week. To test if the amount of video est, at a 5% significance level. She surveys 28 male college students randomly and asks them about their amount of video games each week on average. games in college is more than the national average, a researcher decides to do a...
14. According to a survey, the average college student spends only 2.2 hours on homework per...
14. According to a survey, the average college student spends only 2.2 hours on homework per day in the year 2000. To test if the amount of time spent on homework per day differed last year from 2000, a researcher decides to do a hypothesis test, at a 10% significance level. He surveys 25 college students randomly and asks them about the number of hours they spend on homework per day, on average, last year. From the data, the sample...
Q8: New York is known as "the city that never sleeps". Suppose the amount of sleep (in hours) is ...
ONLY a and b at the end
Q8: New York is known as "the city that never sleeps". Suppose the amount of sleep (in hours) is nearly normal. A random sample of 25 New Yorkers were asked how much sleep they get per night. Statistical summaries of these data are shown below. Do these data provide strong evidence that New Yorkers sleep less than 8 hours a night on average? Assume the significant level is α-0.05. in max 257.73 0.77...
The average adult is supposed to get 8 hours of sleep a night. A "sleep habits"...
The average adult is supposed to get 8 hours of sleep a night. A "sleep habits" survey answered by 28 randomly selected New Yorkers contained the question "How much sleep do you get per night?" The sample average was 7.75 hours, with a corresponding sample standard deviation of 0.8 hours. Conduct a hypothesis test to see if there is evidence that New Yorkers (who live, after all, in "the city that never sleeps") on average get less than 8 hours...
A schoolteacher is concerned that her students watch more TV than the average American child. She...
A schoolteacher is concerned that her students watch more TV than the average American child. She reads that according to the American Academy of Pediatrics (AAP), the average American child watches 4 hours of TV per day (μ = 4.0 hours). She records the number of hours of TV each of her six students watch per day. The times (in hours) are 3.8, 4.6, 2.9, 5.5, 4.4, and 2.8. (a) Test the hypothesis that her students watch more TV than...
The average number of hours slept per week for college seniors is believed to be about...
The average number of hours slept per week for college seniors is believed to be about 60 hours. A researcher asks 10 random seniors at Florida Atlantic University how many hours they sleep per week. Based on the following results, should the researcher conclude that college seniors do or do not sleep an average of 60 hours per week? Data (average number of hours slept per week): 70; 45; 55; 60; 65; 55; 55; 60; 50; 55 1. What is...
A past study claimed that adults in America spent an average of 18 hours a week...
A past study claimed that adults in America spent an average of 18 hours a week on leisure activities. A researcher wanted to test this claim. She took a sample of 10 adults and asked them about the time they spend per week on leisure activities. Their responses (in hours) are as follows. 11.1 12.7 20.8 20.9 23.3 33.9 17 17.9 20.2 21.2 Assume that the times spent on leisure activities by all adults are normally distributed. Using the 5%...
A past study claimed that adults in America spent an average of 18 hours a week...
A past study claimed that adults in America spent an average of 18 hours a week on leisure activities. A researcher wanted to test this claim. She took a sample of 10 adults and asked them about the time they spend per week on leisure activities. Their responses (in hours) are as follows. 12.0 13.3 22.6 22.9 22.5 33.1 16 17.2 20.1 20.3 Assume that the times spent on leisure activities by all adults are normally distributed. Using the 5%...
A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per week) in...
A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per week) in a sample of 10 students. The following table lists the hypothetical results of this study. Social Interaction Internet Use Y X 4 8 7 4 6 7 12 7 3 6 1 11 10 2 (a) Compute the Pearson correlation coefficient. (Round your answer to three decimal places.) (b) Compute the coefficient determination. (Round your answer to three decimal places.) (c) Using...
cording to a survey, the average young adult male plays video games for 4 hours per week. To test fthe amount of video male plays video games for 4 hours per week. To test if the amount of video est, at a 5% significance level. She surveys 28 male college students randomly and asks them about their amount of video games each week on average. games in college is more than the national average, a researcher decides to do a...
14. According to a survey, the average college student spends only 2.2 hours on homework per day in the year 2000. To test if the amount of time spent on homework per day differed last year from 2000, a researcher decides to do a hypothesis test, at a 10% significance level. He surveys 25 college students randomly and asks them about the number of hours they spend on homework per day, on average, last year. From the data, the sample...
ONLY a and b at the end
Q8: New York is known as "the city that never sleeps". Suppose the amount of sleep (in hours) is nearly normal. A random sample of 25 New Yorkers were asked how much sleep they get per night. Statistical summaries of these data are shown below. Do these data provide strong evidence that New Yorkers sleep less than 8 hours a night on average? Assume the significant level is α-0.05. in max 257.73 0.77...
A past study claimed that adults in America spent an average of 18 hours a week on leisure activities. A researcher wanted to test this claim. She took a sample of 10 adults and asked them about the time they spend per week on leisure activities. Their responses (in hours) are as follows. 11.1 12.7 20.8 20.9 23.3 33.9 17 17.9 20.2 21.2 Assume that the times spent on leisure activities by all adults are normally distributed. Using the 5%...
A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per week) in a sample of 10 students. The following table lists the hypothetical results of this study. Social Interaction Internet Use Y X 4 8 7 4 6 7 12 7 3 6 1 11 10 2 (a) Compute the Pearson correlation coefficient. (Round your answer to three decimal places.) (b) Compute the coefficient determination. (Round your answer to three decimal places.) (c) Using...
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