Skip to content

Course home

4.2 Statistical distributions (A-level only)

4.2 Statistical distributions (A-level only)

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233
Question 113

The probability that a specific variety of tomato seed fails to germinate is 0.06. A gardener plants several trays of these seeds.

Find the probability that

a.

a tray containing 25 seeds has exactly 2 seeds that fail to germinate.

[2]
b.

a larger batch of 100 seeds has more than 8 seeds that fail to germinate.

[3]
c.

A commercial greenhouse plants a large shipment of 800 seeds.

Using a suitable approximation, find the probability that the greenhouse's shipment will contain less than 40 seeds that fail to germinate.

[4]
Markscheme

4.2 Statistical distributions (A-level only) Questions

  1. A Level
  2. /Maths
  3. /4.2 Statistical distributions (A-level only)

328 exam-style questions on WJEC A Level Maths 4.2 Statistical distributions (A-level only), covering 4.2.1 Statistical distributions (A-level only), 4.2.2 Statistical distributions (A-level only), and 4.2.3 Statistical distributions (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

Question bank