Making Predictions and Inferences in Math

Below shows the number of votes for different sports:

• Football 12
• Basketball 15
• Volleyball 18
• Tennis 5

Based on the information what is the most reasonable prediction for the number of Tennis votes out of the next 50 votes?

• 7

• 15

• 10

• 20

Pizza Hut surveyed a random sample of students to determine what pizza they prefer. Cheese pizza was preferred by 40 students. Pepperoni pizza was preferred by 28 students. Based on the results, how many of the 340 students in the 9th grade can be expected to prefer cheese pizza?

On a youth soccer team 3 out of the 12 team members have played in previous years. Based on this information, if 150 kids are in the youth soccer league, then how many could be expected to have played the year before?

*NOTE: enter your answers as a number ONLY.

A box of 25 lightbulbs is shipped to a hardware store. When it arrives, four of the bulbs are broken. Predict the number of broken lightbulbs in an order of 125 bulbs.

*NOTE: enter your answers as a number ONLY.

The airport security randomly selected 36 suitcases from the security line. Of these bags, they screened 8 suitcases. Based on this information, what is the most reasonable prediction for the number of suitcases they will screen in a group of 180?

*NOTE: enter your answers as a number ONLY.

In a game, the player wins if he rolls a 6 on a number cube (a dice). If the number cube is rolled 18 times, then what is the reasonable prediction for the number of UNSUCCESFUL rolls?

*NOTE: enter your answers as a number ONLY.

A container of beads contains: 8 red beads, 6 yellow beads, and 6 green beads. A bead will be drawn from the basket and replaced 60 times. What is a reasonable prediction for the number of times a green or red bead is drawn? *NOTE: enter your answers as a number ONLY.

Suppose a coin is flipped 10,000 times. What is a reasonable prediction for the number of times the coin lands on tails?

*NOTE: enter your answers as a number ONLY.

The table shows the results of a school survey about favorite frozen yogurt flavors. If there are 432 students in the school, predict how many would select vanilla or strawberry as their favorite flavor.

• 72 students

• 126 students

• 198 students

• 942 students

The table shows the results of a random survey taken at an amusement park in which they asked guests that had previously visited the park before, to name their favorite ride. Based upon the results of this survey, what inference can you make about the entire population of visitors at the amusement park that day?

• The Green Dragon is the least popular ride.

• The King Canyon was exactly twice as popular as the Monte Carlo.

• The Ellipse is the most popular ride, with more than half of those surveyed choosing it as their favorite ride.

• One-third as many people chose the Monte Carlo as chose The Green Dragon.