Prof Rea’s Exam Q4 Compare the mean and median (without doing any calculations) of the sample of quiz 1 scores (out of 10 points) and justify your answer by providing the shape of the distribution.  

An enzyme that adds or subtracts water molecules is a ______________.

The mechanism whereby an enveloped virus leaves a host cell without killing the host cell is called _______________.

The major significance of Robert Koch’s work is that _____________.

Prof Rea’s Exam Q9 Given below is a scatterplot that shows the number of US crude oil imports from Norway (in millions of barrels) and the number of drivers killed in a collision with a railway train.    The equation of the line of best fit is

Exam Question 1 This assessment is enabling you to demonstrate your understanding of the concepts presented in units 2-4 from Elementary Statistics. Use techniques you have learned to solve the problems on the assessment. Points will be earned primarily through the process of solving. Therefore, you will show as much work as possible and will provide justification whenever necessary. Write your favorite color on the bottom of the last page of the assessment to get an extra point. Use models, tables, and/or write descriptively when providing explanations.  The solutions you provide should be of your own original thought. No collaboration/discussion with anyone, including the use of any AI program, is not permitted. Desmos graphing and desmos scientific calculators are permitted on this assessment, but you will be required to show how you reached your answers (especially if the directions say “show the calculation to earn credit” or “by hand”). If I suspect any part of the work is not your own, you will earn a zero on that portion of the assessment and the activity will be reported to the college to be formally processed and permanently recorded.  Sign your name on your work and answer template to acknowledge and agree to these terms. 

Exam Question 5 The two given distributions have the same mean. Without doing any calculations, identify which distribution has less variability. Explain why you think this.  a.   b.

Prof Rea’s Exam Q7 Suppose that the president has a 54% approval rating among voters. (The population is large enough for trials to be considered independent). What is the probability that a randomly selected voter disapproves of the president? What is the probability that all 4 randomly selected voters approve of the president? Round your answer to three decimal places. What is the probability that of 15 randomly selected voters, exactly 4 approve of the president? Use binomial probability.  Round your answer to three decimal places. Show the calculation to earn full credit.

Turn your work and answer template into ONE file and save it to your device. Click the red SUBMIT ASSIGNMENT button, choose the pdf file of your completed work and answer template, then click the red SUBMIT ASSIGNMENT button again. You will see confetti when you have successfully uploaded your pdf file.  Note that Proctorio may kick you out of the quiz if you open a new window. You are permitted to open new tabs. If Proctorio does kick you out, contact them through their support chat so that they can allow you to re-enter the quiz to complete your submission. Remember that they are more likely to be able to help you with technical problems than me. It is also possible that I am not at my computer when you take the quiz.  If you are not permitted to re-enter the quiz through Proctorio support, send me your file via email immediately and include a screenshot of your conversation with Proctorio. DO NOT CLICK SUBMIT QUIZ UNTIL YOU HAVE SUBMITTED THE ASSIGNMENT AND SEE CONFETTI

Exam Question 5 The two given distributions have the same mean. Without doing any calculations, identify which distribution has less variability. Explain why you think this.  a.  b.