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S1 Edexcel Urgent help please...

That's the final part of a probability distribution Q. I do not know what the question means...
BTW I am aware that F indicates cumulative distribution...but then what?
Thanks in advance...

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Reply 1

Darth_Narwhale

Can you send a pic of then entire question please?

Reply 2

Wolfram Alpha

Original post by Darth_Narwhale

Can you send a pic of then entire question please?

Of course! I think you helped me with a previous part of this Q...

Picture1.png328.2KB

Reply 3

old_engineer

Does

F(x)=P(A \leq x)

help?

Reply 4

username2769500

The capital F means you add them up as you go along the row for Ai values So just add 1 to them And The maximum value should be two! For this I think It would be The same as writing 1 + F(E(A))

(edited 7 years ago)

Reply 5

old_engineer

Original post by Anfanny

The capital F means you add them up as you go along the row for Ai values So just add 1 to them And The maximum value should be two! For this I think It would be The same as writing 1 + F(E(A))

Err no.

F(1+E(A))

is the same as

P(A \leq (1+E(A))

, i.e. it is the probability that

A

is less than or equal to

(1+E(A)

. This cannot be greater than 1.

Reply 6

Wolfram Alpha

Original post by old_engineer

Err no.

F(1+E(A))

is the same as

P(A \leq (1+E(A))

, i.e. it is the probability that

A

is less than or equal to

(1+E(A)

. This cannot be greater than 1.

Thanks, friend!

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