Data Analysis, Statistics & Probability — Quiz 7

Questions in this quiz (8)

1. An amusement park has 7 rides, and Mia wants to ride 3 different rides. The order in which she rides them does not matter. How many different combinations of rides can Mia choose?

   • $$21$$
   • $$35$$
   • $$42$$
   • $$210$$

2. A music playlist will contain 4 different songs chosen from 9 available songs. The order of the songs on the playlist matters. How many different playlists can be created?

   • $$126$$
   • $$3{,}024$$
   • $$6{,}561$$
   • $$15{,}120$$

3. A bakery sells 8 different kinds of cupcakes. A customer wants to buy 3 different flavors, and the order does not matter. How many different selections are possible?

   • $$24$$
   • $$36$$
   • $$56$$
   • $$336$$

4. A bar graph shows the number of accidents involving men and women aged 18–35 in Tabular County during June, July, and August of 2014. A report stated that the monthly accident rates for men in 2015 were 1.6, 2.3, and 1.8 times the rates for women in June, July, and August, respectively. Of the six months reported, when was an accident victim most likely to be male?

   • July 2015
   • June 2015
   • August 2015
   • Both June and July 2015

5. A velocity-time graph shows the acceleration of two classic muscle cars. The Pony increases from 0 miles per hour to 80 miles per hour in 10 seconds. The Firebat increases from 0 miles per hour to 70 miles per hour in 10 seconds. A newer car, the Hermes, increases from 0 miles per hour to 60 miles per hour in 8 seconds. Which classic muscle car has an acceleration rate closest to that of the Hermes?

   • The Pony
   • The Firebat
   • Both the Pony and the Firebat
   • Neither the Pony nor the Firebat

6. Rex Slater predicted that he would win 55% of the class vote. Was Rex Slater's prediction correct?

   • Yes, because he received exactly 55% of the votes.
   • Yes, because he received more than 55% of the votes.
   • No, because he received approximately 36% of the votes.
   • No, because he received approximately 47.4% of the votes.

7. Engineers are testing brakes. The graph shows that a car's speed decreases from 50 miles per hour to 0 miles per hour in 3.5 seconds. The competitors' brakes decelerate the same car at a rate of 15 miles per hour per second. Which statement correctly describes the test results?

   • The brakes are better than the competitors' brakes by more than 1 mph/s.
   • The brakes are better than the competitors' brakes by less than 1 mph/s.
   • The brakes are worse than the competitors' brakes by less than 1 mph/s.
   • The brakes are worse than the competitors' brakes by more than 1 mph/s.

8. According to an ancient Greek theory about beauty, the ratio of the height of a face to its width should be as close to 1.6 as possible. The ratios for five models are: Another person's face has a height of 11 inches and a width of 7 inches. According to this theory, how does this person's face compare with the models?

   • The person is more beautiful than any of the models.
   • The person is more beautiful than four of the models.
   • The person is more beautiful than three of the models.
   • The person is more beautiful than two of the models.