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# Hypothesis testing help please watch

1. carry out the following test using the binomial distribution and a 5% level of significance.

H0: p=0.3
H1: p>0.30
n=20
x=10

X is distributed B(20,0.30)

Does this mean that if P(x=10) < 5% (ie < 0.05) then x = 10 is in the critical region?

Really confused!!! Please xplain really clearly

thanks
2. I THINK, may be wrong, been a while since I've done statistics, that it's if P(X10)<5%
3. (Original post by Chemhistorian)
carry out the following test using the binomial distribution and a 5% level of significance.

H0: p=0.3
H1: p>0.30
n=20
x=10

X is distributed B(20,0.30)

Does this mean that if P(x=10) < 5% (ie < 0.05) then x = 10 is in the critical region?

Really confused!!! Please xplain really clearly

thanks
Since your alternative hypothesis is looking for an increase in p, you are looking for a one-tailed test at the upper end.

If your test value is x, then x is in the critical region if

Using 10 as your test value, you need:

as foolsihboy said.
4. Thanks

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