A sports college keeps records of the times taken by students to run one lap of a running track．The population median time taken is 51.0 seconds．After a month of intensive training，a random sample of 22 new students run one lap of the track，giving times，in seconds，as follows． ................................................................................................................................................................ . ................................................................................................................................................................ . ................................................................................................................................................................ . ................................................................................................................................................................ . ................................................................................................................................................................ . ................................................................................................................................................................ . ................................................................................................................................................................ . ................................................................................................................................................................ . ................................................................................................................................................................ . ................................................................................................................................................................ . ................................................................................................................................................................ . ................................................................................................................................................................ . ................................................................................................................................................................ . ................................................................................................................................................................ . ................................................................................................................................................................ . ................................................................................................................................................................ . ................................................................................................................................................................ . ................................................................................................................................................................ . ................................................................................................................................................................ . ................................................................................................................................................................ .

Further Mathematics

IGCSE&ALevel

CAIE

Exam No：9231_w24_qp_42 Year：2024 Question No：6

Answer:

Knowledge points:

4.4.4.1 Including the use of normal approximations where appropriate.

4.4.4.2 Questions will not involve tied ranks or zero- difference pairs.

Solution:

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