Some answers i got in methods

[LFTM]

can you still get one mark for stating b as -2/9  (using variance and not std.)

I did this. how many marks?

[Whatlol]

can you still get one mark for stating b as -2/9  (using variance and not std.)

I did this. how many marks?

well its worth 2marks, i reakon we could still get 1mark

[sajib_mostofa]

If you just purely stated the answer, you would only get 1 mark.

[lachymm]

Bomb i reckon a high B+ this year?

Can anyone confirm?

[Whatlol]

If you just purely stated the answer, you would only get 1 mark.

i showed working out as in pr( X > 7 ) = Pr (Z > 7-5 /9 )
                                                    =Pr (Z > 2/9)
                                                     = Pr ( Z < -2/9)
                            therefore b = -2/9

[sajib_mostofa]

If you just purely stated the answer, you would only get 1 mark.

i showed working out as in pr( X > 7 ) = Pr (Z > 7-5 /9 )
                                                    =Pr (Z > 2/9)
                                                     = Pr ( Z < -2/9)
                            therefore b = -2/9

Yeah that would be 2 marks.

[Whatlol]

If you just purely stated the answer, you would only get 1 mark.

i showed working out as in pr( X > 7 ) = Pr (Z > 7-5 /9 )
                                                    =Pr (Z > 2/9)
                                                     = Pr ( Z < -2/9)
                            therefore b = -2/9

Yeah that would be 2 marks.

except i used variance, so i still get 1 method mark?

[monicapham93]

surely.
unless they purposely wanted to trip everyone with that
and then proceed to punish anyone that did fall into the trap

[sajib_mostofa]

If you just purely stated the answer, you would only get 1 mark.

i showed working out as in pr( X > 7 ) = Pr (Z > 7-5 /9 )
                                                    =Pr (Z > 2/9)
                                                     = Pr ( Z < -2/9)
                            therefore b = -2/9

Yeah that would be 2 marks.

except i used variance, so i still get 1 method mark?

Oh wait a sec, the answer was -2/3 wasn't it? You would probably get one mark for the method (even though you used variance) but lose the answer mark.

[Whatlol]

If you just purely stated the answer, you would only get 1 mark.

i showed working out as in pr( X > 7 ) = Pr (Z > 7-5 /9 )
                                                    =Pr (Z > 2/9)
                                                     = Pr ( Z < -2/9)
                            therefore b = -2/9

Yeah that would be 2 marks.

except i used variance, so i still get 1 method mark?

Oh wait a sec, the answer was -2/3 wasn't it? You would probably get one mark for the method (even though you used variance) but lose the answer mark.

yea i hope so

[Dawson]

same!!!!

[superflya]

If you just purely stated the answer, you would only get 1 mark.

i showed working out as in pr( X > 7 ) = Pr (Z > 7-5 /9 )
                                                    =Pr (Z > 2/9)
                                                     = Pr ( Z < -2/9)
                            therefore b = -2/9

Yeah that would be 2 marks.

except i used variance, so i still get 1 method mark?

doubt that would get 2 marks, maybe 1 method mark as uve used the incorrect value from the beginning :/