Probability

[vale cosmos]

You have to remember we are including 14

so by doing 41-14 your not

illsend a picture ofworking out

P(x<42) includes all numbers from 41 down

we want 41 to 14

so we need to minus the probability of getting less than 14

i swear there answer for part b is wrong

the p(x>=28)

is that x = anything from 28 to 50

28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

which is 23 things

so it should be 23/50

yes

yeah initially i thought it was 23 and now iv kept thinking about it its confused me even more 😂

to make it easier

always flip them that way

because now you can do

1-27/50

and the 27 just comes from probability of one =1/50 so prob of 27 is 27*1/50