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poisson distribution q pls help

i dont what ive done wrong in 9c
i got the wrong answer but idk what is wrong

thank you!
WhatsApp Image 2020-12-05 at 11.00.26 AM.jpeg150.7KB
Is the answer 0.5298 to 4dp?
Original post by cait1606
Is the answer 0.5298 to 4dp?

yesss
Original post by vix.xvi
yesss


Okay cool aha, do you have a graphical calculator?
Original post by cait1606
Okay cool aha, do you have a graphical calculator?

yupp
Okay, if you go on stats, then distribution, then poisson, then pcd, and then you put your lower and upper limits as 6 and 9, and lambda as 7 and then it should come out with the right answer :smile:
you should have worked with "greater than or equal to 10", not "greater than or equal to 9" towards the end.

you want to exclude values greater than 9.
Original post by cait1606
Okay, if you go on stats, then distribution, then poisson, then pcd, and then you put your lower and upper limits as 6 and 9, and lambda as 7 and then it should come out with the right answer :smile:


Original post by the bear
you should have worked with "greater than or equal to 10", not "greater than or equal to 9" towards the end.

you want to exclude values greater than 9.

got it thank youuu!

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