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# S2 - Hypothesis Question watch

1. hello...
[Check attachment for question] - Help me please!!

thanks.
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2. what board is this...I have absolutely no idea what a type 1 error is...
3. (Original post by Swordsikan)
what board is this...I have absolutely no idea what a type 1 error is...
lol OCR.... Type I = Reject Null Hypothesis when it is correct..
4. The attachment is a real plee (sp?) for help!! honest! can anyone help!
5. (Original post by Tazzie)
The attachment is a real plee (sp?) for help!! honest! can anyone help!
real plee?? (SP) ???? ---------> what do these two mean?

6 (i) Rejection of null hypothesis when it is true;
(ii) 0.117;
(iii) Yes – required by the binomial distribution.

7. (Original post by Saiyan)

6 (i) Rejection of null hypothesis when it is true;
(ii) 0.117;
(iii) Yes – required by the binomial distribution.

I see, whens your S2 exam? and which exam board?
I had mine OCR S2, some weeks ago (failed)
8. (Original post by Vijay1)
I see, whens your S2 exam? and which exam board?
I had mine OCR S2, some weeks ago (failed)
Exam is tomorrow ! - But i`m prepared I think... its just this question.. OCR btw.
9. (Original post by Tazzie)
hehe!
its our beloved normal distribution!

lol
H0:π=25
H1:π<25

X-B(300,0.05)
THEREFORE x--N(15,14.25)

x<20...in continuous, x=19.5 (takeaway 0.5 remebr!!)

p(z<19.5-15 /√14.25)

p(z<1.192)

in the tables p=0.117
Tazzie's Solution

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