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I need help please, if possible could you write on paper and take a picture 9.1 and 9.2 Worksheet Name: Nivea Rivera CP Statistics-Adams Period:

I need help please, if possible could you write on paper and take a picture

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9.1 and 9.2 Worksheet Name: Nivea Rivera CP Statistics-Adams Period: _ Date: 1. A school psychologist reports that the mean number of hours the students at this school sleep each night is 8 hours. The students believe the mean is not 8 hours. To find an estimate of the true mean, they select a random sample of 15 students from their school and ask how many hours each slept last night. A stemplot and boxplot of the numbers of hours are shown here. The sample mean is 6.67 hours with a sample standard deviation of 1.88 hours. Stem- and- leaf of Hours of Sleep N = 15 Leaf Unit = 0. 10 37 4 39 5 149 (2)) 6 15 7 015 4 58 2 39 w - 4 5 6 7 8 10 Hours of Sleep (per night) a. Verify that the conditions for computing a confidence interval are met in this case. b. Compute and interpret a 95% confidence interval for the mean number of hours the students at this school sleep each night

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