Lucero Sosa Edgar Flores Period 1 DO YOU

California Standards • 8. 0 Student organized and describe distribution of data by using

Hypothesis We believe the population proportion will be 65% of juniors and seniors dislike

Data Collection Two group members will collect data by using the stratified method, a

Data Students Yes No Total Seniors 16 34 50 Juniors 17 33 50 Total

Statistics Sample population is 33/100 =0. 33 the totals of “Yes”. Sample population is

Confidence Interval We are 95% confident the population proportion of students at Century dislike

Hypothesis Testing • Hypothesis • Test Statistics 1 -prop z- test P-Value=1<. 05 •

Error Analysis Our sample proportion is 33% said yes, and the 95% confidence level

Conclusion We hypothesized that 65% Century’s Seniors and Juniors students don’t like Century’s restroom.

Slides: 10

Download presentation

Lucero Sosa Edgar Flores Period 1 DO YOU LIKE CENTURY’S RESTROOMS?

California Standards • 8. 0 Student organized and describe distribution of data by using of different methods, including frequency table, histogram, standard line and bar graphs, stem-and-leaf displays, scatter plots, and box of whisker plots. • 17. 0 Students determine confidence interval for a simple random sample from a normal distribution of data and determine the sample size required for a desired margin of error. • 18. 0 Student determine the P-value for a statistic for a simple random sample from a normal distribution

Hypothesis We believe the population proportion will be 65% of juniors and seniors dislike Century’s restrooms.

Data Collection Two group members will collect data by using the stratified method, a method that involves the division of population into smaller groups We had a yes or a no answer for 100 students between juniors and seniors, during lunch.

Data Students Yes No Total Seniors 16 34 50 Juniors 17 33 50 Total 33 67 100

Statistics Sample population is 33/100 =0. 33 the totals of “Yes”. Sample population is 67/100=0. 67 the total of “No”.

Confidence Interval We are 95% confident the population proportion of students at Century dislike the restrooms is between 24% and 42%.

Hypothesis Testing • Hypothesis • Test Statistics 1 -prop z- test P-Value=1<. 05 • Conclusion At 5% level of significance, we failed to reject Po. There is enough evidence to support our claim.

Error Analysis Our sample proportion is 33% said yes, and the 95% confidence level for the population proportion is between 24% and 42%. Sample error Our survey could of been a little better if we asked more people. And if we could of teamed up with smarter people.

Conclusion We hypothesized that 65% Century’s Seniors and Juniors students don’t like Century’s restroom. On our survey of 100 students, we found that. 33% seniors and juniors do like Century's restroom and 67% don’t like Century’s restroom. Our hypothesis was almost correct.