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How many times a week are you late to school?

How many times a week are you late to school?. Leslie Lariz Marisol Cipriano Period 6 2011-2012. California Standards.

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How many times a week are you late to school?

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  1. How many times a week are you late to school? Leslie Lariz Marisol Cipriano Period 6 2011-2012

  2. California Standards • 8.0 Students organize and describe distributions of data by using a number of different methods including frequency tables, histograms, standard line and bar graphs, stem-and leaf displays, scatterplots, and box-and-whisker plots. • 17.0 Students determine confidence intervals for a simple random sample from a normal distribution of data and desired margin of error. • 18.0 Students determine the p-value for a statistic for a simple random from a normal distribution.

  3. Hypothesis • We believe that the average student is late at least twice a week to their first period class.

  4. Data Collection • Sampling technique is being used • Example: We collected data by using the random sampling method. We went out during the school day to ask 40 students, using random number table to survey 40 students.

  5. Data • 2,5,1,1,1,2,1,1,5,2, 2,2,4,4,1,1,2,1,2,3, 3,4,1,2,1,5,4,2,2,2, 1,1,1,1,4,3,3,2,1,

  6. Histogram

  7. Statistics • From our survey, the students sample time is 24.4 minutes with a sample standard deviation of 20.4

  8. Confidence Interval • 95% confidence interval • Z-Interval • (20.521, 32.477) • We are 95% confident that students are between 9.6 to 22.5 minutes late to school.

  9. Hypothesis Testing • We are telling the true because we would get here late to see people coming in late • We believe that the average student is late at least twice a week to their first period class. • The students sample time is 24.4 minutes • Our hypothesis is that Century students have a average of 15 minutes being tardy • At 5% level of significance, were sorry to reject. That there is a lot of evidence to support our claim.

  10. Error Analysis • Our sample mean is 24.4 minutes, and the 95% confidence level for the population mean is between 9.6 to 22.5 minutes. The marginal error is about 6 minutes. • Our sample error is failed to the possible of the population. We might need to take more samples to Students Tardys, Students fail to check their survey.

  11. Conclusion • Our hypothesis is that Century students have a average of 15 minutes being tardy. In our survey of 40 students, we found the sample mean of 24.4 minutes with a standard deviation of 20.4 minutes. We conclude that the population mean for all the students is between 9.6 to 22.5 minutes with 95% confident. We test our hypothesis with 5% of significance, and we could confirm that the hypothesis is correct.

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