Probability of Kyra Being Chosen

The video tutorial explains how to calculate the probability of Kyra being selected for a conference from a team of 13 people. It involves understanding combinations and calculating the total number of possible teams and those including Kyra. The final probability is determined by dividing the number of favorable outcomes by the total possible outcomes.

What is the total number of people on Kyra's team?

• 10

• 12

• 13

• 15

How many members are being selected for the conference?

• 4

• 5

• 3

• 2

Tags

CCSS.HSS.CP.B.9

What is the first step in calculating the probability of Kyra being chosen?

• Select the team leader

• Calculate the total number of team members

• Determine the number of ways Kyra can be on the team

• Choose the conference location

How do we calculate the total number of possible teams?

• By choosing 2 members from 12 without order

• By choosing 2 members from 12 with order

• By choosing 3 members from 13 without order

• By choosing 3 members from 13 with order

If Kyra is on the team, how many other members need to be chosen?

• 1

• 2

• 3

• 4

From how many people are the remaining team members chosen if Kyra is already on the team?

• 10

• 11

• 12

• 13

What is the formula used to calculate combinations?

• n! / (r! * (n-r)!)

• n! / r!

• (n-r)! / n!

• n! * r!

Tags

CCSS.HSS.CP.B.9

What is the probability that Kyra is chosen for the conference?

• 4/13

• 1/13

• 2/13

• 3/13

What is the total number of ways to arrange three people?

• 9

• 6

• 12

• 3

Tags

CCSS.7.SP.C.7A

What is the final step in calculating the probability?

• Multiply the number of favorable outcomes by the total outcomes

• Divide the number of favorable outcomes by the total outcomes

• Add the number of favorable outcomes to the total outcomes

• Subtract the number of favorable outcomes from the total outcomes

Tags

CCSS.7.SP.C.7A