Mathematics, 17.09.2019 15:20 michaylabucknep7u3y2
In a sample of 50 households, the mean number of hours spent on social networking sites during the month of january was 45 hours. in a much larger study, the standard deviation was determined to be 8 hours. assume the population standard deviation is the same. which of the statement below best describes that there is a 95% confidence interval for the mean hours devoted to social networking in january? a. the 95% confidence interval ranges from 8 to 45 hours. b. the 95% confidence interval ranges from 40.13 to 45.78 hours. c. the 95% confidence interval ranges from 43.87 to 46.13 hours. d. the 95% confidence interval ranges from 42.78 to 47.22 hours.
Answers: 2
Mathematics, 21.06.2019 14:50
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Mathematics, 21.06.2019 16:00
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Mathematics, 21.06.2019 17:00
Asailor is looking at a kite. if he is looking at the kite at an angle of elevation of 36and the distance from the boat to the point where the kite is directly overhead is 40 feet, how high is the kite?
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In a sample of 50 households, the mean number of hours spent on social networking sites during the m...
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