Probability
A bag contains black, white and grey balls. The probability of selecting a black ball is 0.3 and a grey ball is 0.6. What is the probability of selecting a white ball?
0.1
How long will it take a vehicle to travel 342 km at a speed of 70km/h?
4.89 hours
Sorting people in alphabetical order and selecting every fifth person. How would you describe this type of sample?
Systematic
Who founded Amazon?
Jeff Bezos
What is Ms. Buot's favourite color?
Black
A letter is chosen at random from the word ‘NEWCASTLE’. What is the probability that the letter will not be a vowel?
2/3
Evaluate P if P = 2l + 2b and:
l = 30 and b = 21.
102
Sample designed to include four boys and four girls randomly selected from members of a surf club. How would you describe this type of sample?
Stratified
Riddle: What goes up but never comes down?
Your age.
What other subject can Ms. Gonzales teach?
Commerce or Business Studies
Caitlin selects a card at random from a standard pack of cards. Find the probability of obtaining a card that is not a heart.
3/4
Layla is 61 kg and has consumed 5 standard drinks in the past four hours.
Calculate Layla’s blood alcohol content using the formula BAC = (10N - 7.5H)/5.5M
0.060
What is vertical axis title on the right-hand side of a Pareto chart?
Cumulative percentage
What is the most common letter in the English alphabet?
E
What is Ms. Buot's favourite sport?
Badminton
A probability of a dog catching heartworm is 3/8. If there are 896 dogs in the local community, how many of them would you expect to catch heartworm?
336
Solve:
9(1 - 3a) = 21
a = -4/9
Jesse’s water usage in one day was 60 L shower, 45 L toilet, 30 L tap and 15 L washing machine. What percentage of Jesse’s water usage is for the washing machine?
10%
How tall is the Eiffel Tower?
324 metres
What is Ms. Gonzales's favourite chocolate?
Bueno
Last year Oscar bought a packet of biscuits every week and found 30 of these packets contained broken biscuits. What is the relative frequency of this event? Answer as a decimal correct to two decimal places.
0.58
For the formula, v2 = u2 + 2as,
Make u the subject.
u = sqrt(v2 - 2as)
The stem-and-leaf plot below represents the results achieved by students in a test.
0| 9
1| 1249
2| 135788
3| 0 235
What is the median?
25
How many minutes are in one week?
10080
What do Ms. Buot and Ms. Gonzales have in common?
They are both Filipino