Question

Help ?? Medal and fan!!

The graph shows a probability distribution P(X) for a discrete random variable X.

Enter the probabilities.

P(20≤X<40)=

P(X<10)=

Answer 1

what is the value of the vertical (probability function) axis for the value of x from 0 to 10 ?

Answer 2

read it off the graph.

Answer 3

isn't it 0.1?

Answer 4

yes
thats the answer to the second part

Answer 5

P(X<10) = 0.1

Answer 6

ahhh okay !

Answer 7

For the first part just add the 2 values for 20 and 40

Answer 8

so then for the first one 20 is 0.4 and 40 is 0.2

Answer 9

No its >= 20 so its 0.30 + 0.2

Answer 10

adding those together it would be 0.5 ?

Answer 11

I mislead you there
the first part is the rectangle 20-30 which gives P( 20 =< X < 30)

Answer 12

yea 0.5

Answer 13

ohh so would that be my final answer or..?

Answer 14

yes P(20 =<X < 40) = 0.5

Answer 15

okay, thank you so much for your help!!

Answer 16

yw