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Maths S1 Edexcel IAL June 2018 Exam thread

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Original post by Gth6770
What were the quartiles? Q1=28 Q2=30 Q3=32 ?

Yeah that is corrxft
What are will be the predictions in of the grade bondanries?
Reply 22
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Gth6770
6
What did you
Original post by quraisht
yes


What did you get for the normal distribution question for M and sd?
For part b) I got p(x>0.4) so i did 1-p(x>0.4)
Width is 1.5 height is 6
Original post by Gth6770
What did you
What did you get for the normal distribution question for M and sd?
For part b) I got p(x>0.4) so i did 1-p(x>0.4)


M was 10.6, i forgot what i wrote for SD
Reply 25
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Gth6770
6
Original post by Sanzmatic
M was 10.6, i forgot what i wrote for SD


Yes I got 10.6 too!!!
Reply 26
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Gth6770
6
What did you guys get for the probability between 1.1-1.6 I got 22.5/48
Original post by Leniaeco
Was it easy?


No
What are will be the grave bondaries?
Reply 29
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Gth6770
6
Original post by Liloso skipwith
What are will be the grave bondaries?


Maybe 59/75 A
Reply 30
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Awenclear
OP
7
Original post by Gth6770
What did you guys get for the probability between 1.1-1.6 I got 22.5/48


I got 27/48
Reply 31
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Gth6770
6
Does anyone remember the discrete random variable answers?
Reply 32
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Gth6770
6
P(1<=X<4) 2/9
Var(x)=236/81
Var(3X+6)= 236/9
Reply 33
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Gth6770
6
Does anyone remember the probability answers not the last question tho
Reply 34
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Thakshi
4
Guys how about the last question
Original post by Gth6770
And what did you get for the height and width of the histogram question I remmeber getting width=0.5 can’t remember height


i found the width to be 0.5 also but the height 13.5
Reply 36
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Gth6770
6
For the regression line I got y=-25.4+8.06x
But for finding the 44 gallons thingy I did
m-25=-25.4+8.06(p/10) so
m-25=-25.4+8.06(44/10) is that correct?
(edited 5 years ago)
Reply 37
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Gth6770
6
Original post by jenhadji
i found the width to be 0.5 also but the height 13.5


That’s what I got!
Original post by Gth6770
For the regression line I got y=-25.4+6.08x
But for finding the 44 gallons thingy I did
m-25=-25.4+6.08(p/10) so
m-25=-25.4+6.08(44/10) is that correct?


wait you found 6.08? i found 8.06?
Reply 39
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Gth6770
6
Original post by jenhadji
wait you found 6.08? i found 8.06?


Oh sorry I probably got that too I just forgot

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