Probability Tables and Calculations

The video tutorial by Liz covers probability tables, focusing on completing them and solving related questions. It explains how to calculate probabilities and percentages for different groups, such as male and female students and staff, using given data. The tutorial also demonstrates how to use the formula E = n * P to find expected numbers and solve various probability-related questions.

What is the main focus of the video tutorial?

• Algebraic equations

• Probability tables and their completion

• Calculus and derivatives

• Geometry and shapes

What must the rows and columns in a probability table add up to?

• 100

• 10

• 0

• 1

If the total probability is 1, and one value is 0.872, what is the missing value?

• 0.512

• 0.256

• 0.872

• 0.128

How do you calculate the total number of people if you know the number of students and their probability?

• Add the number of students to the probability

• Subtract the probability from the number of students

• Divide the number of students by the probability

• Multiply the number of students by the probability

What formula is used to find the expected number of students?

• E = n - P

• E = n + P

• E = n * P

• E = n / P

How many male students are there if the probability of being a male student is 0.456?

• 900

• 750

• 680

• 800

What is the probability of being a male staff member given the probability of being staff is 0.128?

• 0.256

• 0.07

• 0.128

• 0.5469

What is the proportion of females that are students if the probability is 0.416 out of 0.474?

• 0.416

• 0.474

• 0.8776

• 0.776

What is the probability that a randomly chosen student is female?

• 0.128

• 0.872

• 0.4771

• 0.416