A researcher records the number of dreams that 50 college freshman students recalled during the night prior to a final exam Number of Dreams Cumulative Frequency 4 50 3 46 33 1 13 8. (a) Convert this table to a percentile rank distribution. Percentile Rank Number of Cumulative Dreams Frequency 50 % 46 % 33 % 1 13 8. % (b) What is the number of dreams at the 66th percentile? dreams

How many classes are there and what is the class width?

You wish to determine if there is a linear correlation between the age of a driver and the number of driver deaths. The following table represents the age of a driver and the number of driver deaths per 100,000. Use a significance level of 0.01 and round all values to 4 decimal places. Driver Age 65 69 48 37 49 27 62 64 Ho: p = 0 Ha: p = 0 r= Find the p-value p-value= Number of Driver Deaths per 100,000 22 22 34 Find the Linear Correlation Coefficient The p-value is Greater than a Less than (or equal to) a 23 28 20 The p-value leads to a decision to O Do Not Reject Ho O Accept Ho O Reject Ho 33 33 The conclusion is O There is a significant negative linear correlation between driver age and number of driver deaths. There is a significant linear correlation between driver age and number of driver deaths. O There is insufficient evidence to make a conclusion about the linear correlation between driver age and number of driver deaths. O There is a significant positive linear correlation…

The popularity of computer, video, online, and virtual reality games has raised concerns that they might negatively affect youth. The data in this exercise are based on a recent survey of 14- to 18-year-olds in Connecticut high schools. The table displays the grade distributions of boys who have and have not played video games. Played games Never played games A's and B's: C's: A's and B's D's and F's: 744 210 Grade Average C's 445 140 D's and F's Find the conditional distribution of grades (the response variable) for nonplayers. Give your answers to two decimal places. 197 84 % % %

What is the percentile for your 10th data point? (when they are arranged in order) Number of Frogs Caught Daily Next to my House   29 23 14 13 23 22 16 24 27 25 26 19 21 19 25

A researcher records the number of dreams that 50 college freshman students recalled during the night prior to a final exam.   Number of Dreams   Cumulative Frequency   4 50 3 44 2 30 1 12 0 5 A.  Convert this table to a percentile rank distribution. B.  What is the number of dreams at the 60th percentile?