Suppose that a student is randomly selected.  The probability that the student is a senior is 0.22.  The probability that the student has a driver’s license is 0.30.  If the probability that the student is a senior or has a driver’s license is 0.36, what is the probability that the student is a senior and has a driver’s license?

HERE IT IS!!! THE LAST ONE!! In all seriousness, I hope you did enjoy the course this semester.  Even though it was not an ideal teaching and instruction method; I do hope that I made it interesting and fun. In my endeavor to continue to be better could you please let me know what you think I could do to make the course better? I’m not perfect and don’t think I am so could you let me know what about the projects or tests or HW or examples that could be used, etc. where I can get better. I am very open to suggestions so just answering this to give me an idea will give you the 4 points. (nice last bonus)   Please take care and if you need anything then please let me know and I’ll try to help you out! Sincerely, Brian

On New Year’s Eve in Gainesville, the Florida Highway Patrol collected a random sample of 10 drivers arrested for driving under the influence. The Blood Alcohol Content (BAC) was recorded.  The BAC is measured in the number of grams of alcohol per 100 grams of blood.  A 95% confidence interval for the average BAC of drivers arrested in Gainesville on New Year’s Eve was created.  The confidence interval was (0.0953 , 0.1947).  Interpret the confidence interval in terms of the problem. 

Upload your previously done work or type your answers below 3. Construct and interpret a confidence interval for the difference in the mean length of songs between the older decade and the newer decade.   State: Plan: Do: Conclude:

Upload your previously done work or type your answers below  Construct and interpret a confidence interval to infer the population mean of the length of song (in seconds) for your older decade at a 95% confidence level   State: Plan: Do: Conclude:

A new roller coaster at an amusement park requires individuals to be at least 4’ 8” (56 inches) tall to ride.  It is estimated that the heights of 10-year-old boys are normally distributed with a mean of 54.5 inches and a standard deviation of 4.5 inches. This question has, so please answer all three parts. Show all Work. 1) Find the z- score for this problem 2) Construct the most appropriate graph that illustrates the probability that a a ten-year-old boy is tall enough to ride the roller coaster 3) What is the probability that a ten-year-old boy is tall enough to ride the roller coaster?

Upload your previously done work or type your answers below 4. It was recently reported through Fortune Magazine, Quartz / Digital Music News, PRS for music, and the New York Times that songs are shorter now than they were decades ago. However, to be sure, perform a significant test comparing the two decades given. Is there enough significant evidence to say that the two decades are different than each other at ? State: Plan: Do: Conclude:   BONUS: explain how the P-value would change and if the conclusion changes if the alternative hypothesis was lower instead of different

Using a binomial random variable distribution, answer the following question. It has been estimated that about 30% of frozen chickens are contaminated with enough salmonella bacteria to cause illness if improperly cooked. Chickens are delivered to grocery stores in crates of 24.  Assume the chickens are independently selected for inclusion in the crate.   The probability that certain crate has more than 4 contaminated chickens is____________

Engineers are interested in replacing solid-wood building material by less expensive products made from wood flakes.  They collected the following data to examine the relationship between the length (in inches) and the strength (in pound per square inch) of beams made from wood flakes.  The scientists were interested in knowing if the length of the beam affected its strength.  Interpret the scatter plot.       Be sure to include all 4 important features.

Use the 68-95-99.7 Rule to answer the following. Suppose that the distance a golfer can hit the ball has an approximately Normal distribution with a mean of 200 yards and a standard deviation of 15 yards.  The middle 99.7% of his hits will travel between what two distances?