Zadanie 7a
Find P(E).
Events and expected counts
Describe sample spaces and events, calculate elementary probabilities and connect probabilities with expected occurrence counts.
Tę umiejętność sprawdza 12 zadań wzorowanych na arkuszach IB z lat 2023–2025.
Zadania sprawdzające tę umiejętność: 12 Otwórz w wyszukiwarce z filtrami
Zadanie 2a
Explain why the generator has 128 possible quadratics.
Zadanie 2c
Show that the probability of exactly one x-intercept is 3/64.
Zadanie 2d
For generated quadratics with two distinct x-intercepts, determine the possible values of ac.
Zadanie 2e
For quadratics with two distinct x-intercepts: (i) show that ac=1 gives six possible quadratics; (ii) show that ac=2 gives twelve.
Zadanie 2f
Find the probability p that a generated quadratic has two distinct x-intercepts. Show how you count the possibilities.
Zadanie 2a
Find P(A∩B).
Zadanie 2a
Estimate for tomorrow (i) the probability that a kitchen returns at least one container; (ii) the expected number returned per kitchen.
Zadanie 10e
An observation time is selected uniformly from 0 to 6 seconds. Find the probability that the clearance exceeds 1.9 cm.
Zadanie 11a
For experiment A, show that y2 − (4r + 1)y + r2 − r = 0.
Zadanie 11b
Using the quadratic for experiment A, show that . The relation for experiment A is y2 − (4r + 1)y + r2 − r = 0.
Zadanie 11c
Give two different integer pairs (r,y) satisfying experiment A.