Mini Exam 13 — Timed Mini Exams

Questions in this quiz (10)

1. Each side of a 30-sided polygon has one of three lengths. The number of sides with length 8 centimeters is 5 times the number of sides $$n$$ with length 3 centimeters. There are 6 sides with length 4 centimeters. Which equation must be true for the value of $$n$$?

   • $$5n+6=30$$
   • $$6n+6=30$$
   • $$8n+3n+4n=30$$
   • $$8(5n)+3n+4(6)=30$$

2. Data set F consists of 55 integers between 170 and 290. Data set G consists of all the integers in data set F as well as the integer 10. Which of the following must be less for data set F than for data set G? I. The mean II. The median

   • I only
   • II only
   • I and II
   • Neither I nor II

3. A right circular cone has a height of 22 centimeters and a base with a diameter of 6 centimeters. The volume of this cone is $$n\pi$$ cubic centimeters. What is the value of $$n$$?

   • 66

4. A college graduate takes their first employment check of $$\$2,500$$ and puts it into a retirement fund. If the 4.7% interest rate is always based upon that initial deposit amount, how much money will they have in the account after 20 years?

   • $$3,850$$
   • $$8,350$$
   • $$4,850$$
   • $$5,480$$

5. A soccer team has scored 1, 1, 2, 2, 3, 3, 4, 4, 5 goals in its first 9 games. During the next game, the team scores 8 goals. Compare the mean and the standard deviation before and after the next game.

   • The mean and standard deviation increase.
   • The mean and standard deviation decrease.
   • The mean increases, but the standard deviation does not change.
   • The mean decreases, but the standard deviation does not change.

6. A college student notices that he has a loan for $$\$1,500$$ with one lender, but he owes $$\$1,725$$ after one month because of the interest rate he pays. What is the interest rate on that loan?

   • $$15\%$$
   • $$5\%$$
   • $$8.6\%$$
   • $$5.7\%$$

7. A basketball has a diameter of 10 inches. What is the volume, in cubic inches, inside the ball? Use 3.14 for $$\pi$$.

   • $$261.67$$
   • $$523.33$$
   • $$1046.67$$
   • $$2093.33$$

8. Samantha ran 8 kilometers in 50 minutes. If she ran that same pace, approximately how long will it take her to run 10 kilometers?

   • 86 minutes
   • 63 minutes
   • 90 minutes
   • 72 minutes

9. Two siblings each took a standardized math test for their grade levels. One sibling took the test with 75 questions and the older sibling took the test with 140 questions. If the younger sibling got 60 questions right and both siblings received the same overall score, how many questions did the older sibling answer correctly?

   • $$125$$
   • $$105$$
   • $$112$$
   • $$122$$

10. The dot plot shows the number of hours a group of students volunteered. How are the mean and median affected when removing the outliers?

    • The mean decreases, but the median does not change.
    • The mean increases, but the median does not change.
    • The mean and median both decrease.
    • The mean does not change, but the median decreases.