8
5.1 1 2 3 4 ( = ) 0.2 0.3 0.4

Factorise x^2+?x+?

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Page 1: Factorise x^2+?x+?

5.1

𝑿 1 2 3 4

𝑃(𝑋 = đ‘„) 0.2 0.3 0.4 𝑘

Page 2: Factorise x^2+?x+?

5.2

Page 3: Factorise x^2+?x+?

5.3

Page 4: Factorise x^2+?x+?

5.4

𝑿 40-44 45-49 50-59 60-79

𝑓 12 17 5 2

Page 5: Factorise x^2+?x+?

A random sample of 30 students each recorded the number, đ‘„,

of videos they watched during a 3 week period. The results

are summarised as: đ‘„ = 407, đ‘„2 = 6535 Calculate the standard deviation of this data.

5.5

Page 6: Factorise x^2+?x+?

The random variable 𝑋 has a cumulative function

đč đ‘„ =3đ‘„âˆ’1

8 for x = 1, 2, 3

Find the probability distribution of 𝑋

5.6

Page 7: Factorise x^2+?x+?

5.7

Page 8: Factorise x^2+?x+?

5.7a