Skip to content

Course home

Sign up

2 Statistics

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511
Question 358
a.

State the term used to describe two events XXX and YYY when P(X∩Y)=0P(X \cap Y) = 0P(X∩Y)=0.

[1]
b.

An engineering laboratory tests the reliability of a high-performance drone. The events SSS (sensor failure) and III (interference) are independent. It is observed that the probability of a sensor failure is P(S)=58P(S) = \frac{5}{8}P(S)=85​ and the probability that the drone experiences at least one of these issues is P(S∪I)=56P(S \cup I) = \frac{5}{6}P(S∪I)=65​.

Find

P(I)P(I)P(I)

[3]
c.

P(S∩I′)P(S \cap I')P(S∩I′)

[2]
d.

P(S′∣I)P(S' | I)P(S′∣I)

[2]
Markscheme

2 Statistics Questions

  1. A Level
  2. /Maths
  3. /2 Statistics

Question bank