SAT Scores (Part 2): The following table provides some data about SAT scores from 2015.  The scoring on the exam has since changed, which is why it is labeled as “old” SAT scores. (A) We will assume that the mean and median are the same for this data.  The standard deviation for this data is 323. Using this and your median (from SAT Scores – Part 1, part (C)), give an interval in which about the middle 68% of test takers scored, using our understanding of the standard deviation.  Explain what this interval means in this context. (B) Describe carefully where on the graph below you would label: – the median (which we are assuming is the same as the mean), – the two ends of the interval you determined in part (A), – and the standard deviation. Include the values you determined for each of these in your labeling description.

Moldy Bagel (Part 1): You bought a bagel a little while ago, but forgot to eat it.  When you find it again, you see a little patch of mold growing on it.  Curious, you decide to record the amount of area it covers (in square centimeters) every hour.  After recording your data, you put it into a spreadsheet and have the spreadsheet create an exponential model for you.  The model it gives you is: 

Sales Commission (Part 1): Some companies pay their sales representatives (sales-reps) in a “graduated commission” plan.  Suppose a company pays their employees graduated commission in the following way: If total sales is over— but not over— the commission is: $0 $5,000 2% of the amount over $0 $5,000 $10,000 $100 plus 4% of the amount over $5,000 $10,000 $20,000 $300 plus 5% of the amount over $10,000 $20,000 no limit $800 plus 6% of the amount over $20,000   (A)  How much money would a sales-rep earn in commission with $12,000 in sales?   (B) What would be the effective commission rate for part (A)?   (C) Write a sentence or two explaining what the effective commission rate from part (B) means in this context.

Metro Gardens: Inniswood Metro Gardens is currently a 123 acre Columbus Metro park which includes a botanical garden.  The park was originally a 37 acre family estate that was donated to become a park. Suppose that 12% of the current park is covered with mulch (a layer of soil and fertilizer) each year. (1 acre = 43,560 square feet) (12 inches = 1 foot) Remember to show and explain all your work, including units. (A)  How many acres need to be covered with mulch each year? (B)  How many square feet is your answer in part (A)?   (C)  The mulch needs to be 3 inches deep, and each bag of mulch holds 3 cubic feet of mulch.  How many bags would need to be bought to mulch the area you found in part (B)? (D)  Assume each bag of mulch costs $4.35.  How much would buying all of this mulch cost?

Which diagnostic method is used to detect endocarditis?

Which of the following should never be done with used needles?

What type of bacteria is killed by bactericidal drugs?

How do aminoglycosides work?

What is the primary concern when using antimicrobials without proper indications?

Sales Commission (Part 3): We are using the same graduated commission scale as was given in Sales Commission (Part 1): If total sales is over— but not over— the commission is: $0 $5,000 2% of the amount over $0 $5,000 $10,000 $100 plus 4% of the amount over $5,000 $10,000 $20,000 $300 plus 5% of the amount over $10,000 $20,000 no limit $800 plus 6% of the amount over $20,000   What if a sales-rep earned $425 in commission.  How much were the total sales to earn that commission?