- #1
chwala
Gold Member
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- Homework Statement
- Kindly see attached question and mark scheme guide
- Relevant Equations
- ##Bin (n,p)##
Consider the question below:
this (below) is the mark scheme for the problem, there were different methods given in the mark scheme but i was interested on this one only...
Now onto my question, How did they calculate ##P(X≥10)##=##1-P(X≤9)##=##0.055##...?
In attempting to understand the question i went ahead and looked at a similar problem (attached below); i.e
and i could see from my analysis that, the highlighted value could have been found using the steps below:
##P(x≥4)=1- [ P(x=0) +P(x=1)+P(x=2)+P(x=3)]##
=## 1- [0.1615+0.3230+0.2907+0.1550]##
=##1-0.9302##
=##0.0698##
ok is this correct? if so going back to our problem, do we use the same approach? or there is a shorter way...
This is the only part that i need clarity. I should be able to come to the deduction on whether to reject or accept null hypothesis.
this (below) is the mark scheme for the problem, there were different methods given in the mark scheme but i was interested on this one only...
Now onto my question, How did they calculate ##P(X≥10)##=##1-P(X≤9)##=##0.055##...?
In attempting to understand the question i went ahead and looked at a similar problem (attached below); i.e
and i could see from my analysis that, the highlighted value could have been found using the steps below:
##P(x≥4)=1- [ P(x=0) +P(x=1)+P(x=2)+P(x=3)]##
=## 1- [0.1615+0.3230+0.2907+0.1550]##
=##1-0.9302##
=##0.0698##
ok is this correct? if so going back to our problem, do we use the same approach? or there is a shorter way...
This is the only part that i need clarity. I should be able to come to the deduction on whether to reject or accept null hypothesis.
Last edited: