z alpha by 2 distribution-help!
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How do we use z aplha by 2 distribution? I don't get it one bit. For the table it says z on lhs and second decimal place of z on the top in the rhs. Firstly if e.g apha is 0.05 then apha by 2 is 0.025 so we know that we have z subscript 0.025 so how on earth do we use the table if we know only the value of alpha and not the value of z, what on earth do we look for in the tables?
s
statistical-inference
asked Apr 25 '14 at 22:58
user134785user134785
504721
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add a comment |
$begingroup$
How do we use z aplha by 2 distribution? I don't get it one bit. For the table it says z on lhs and second decimal place of z on the top in the rhs. Firstly if e.g apha is 0.05 then apha by 2 is 0.025 so we know that we have z subscript 0.025 so how on earth do we use the table if we know only the value of alpha and not the value of z, what on earth do we look for in the tables?
s
statistical-inference
asked Apr 25 '14 at 22:58
user134785user134785
504721
$endgroup$
add a comment |
$begingroup$
How do we use z aplha by 2 distribution? I don't get it one bit. For the table it says z on lhs and second decimal place of z on the top in the rhs. Firstly if e.g apha is 0.05 then apha by 2 is 0.025 so we know that we have z subscript 0.025 so how on earth do we use the table if we know only the value of alpha and not the value of z, what on earth do we look for in the tables?
s
statistical-inference
asked Apr 25 '14 at 22:58
user134785user134785
504721
$endgroup$
How do we use z aplha by 2 distribution? I don't get it one bit. For the table it says z on lhs and second decimal place of z on the top in the rhs. Firstly if e.g apha is 0.05 then apha by 2 is 0.025 so we know that we have z subscript 0.025 so how on earth do we use the table if we know only the value of alpha and not the value of z, what on earth do we look for in the tables?
s
statistical-inference
statistical-inference
asked Apr 25 '14 at 22:58
user134785user134785
504721
asked Apr 25 '14 at 22:58
user134785user134785
504721
asked Apr 25 '14 at 22:58
user134785user134785
504721
asked Apr 25 '14 at 22:58
user134785user134785
504721
asked Apr 25 '14 at 22:58
user134785user134785
504721
504721
add a comment |
add a comment |
1 Answer
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$begingroup$
if $alpha=0.05$, that means you are looking for $P(Z leq z)=1-0.05=0.95$
You look where in the table (more or less) 0.95 ist written. Then you look on the lhs, take the value and add the value on the top of the column.
Was this your question ?
greetings,
calculus.
answered Apr 25 '14 at 23:31
callculuscallculus
18.2k31427
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1 Answer
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$begingroup$
if $alpha=0.05$, that means you are looking for $P(Z leq z)=1-0.05=0.95$
You look where in the table (more or less) 0.95 ist written. Then you look on the lhs, take the value and add the value on the top of the column.
Was this your question ?
greetings,
calculus.
answered Apr 25 '14 at 23:31
callculuscallculus
18.2k31427
$endgroup$
add a comment |
$begingroup$
if $alpha=0.05$, that means you are looking for $P(Z leq z)=1-0.05=0.95$
You look where in the table (more or less) 0.95 ist written. Then you look on the lhs, take the value and add the value on the top of the column.
Was this your question ?
greetings,
calculus.
answered Apr 25 '14 at 23:31
callculuscallculus
18.2k31427
$endgroup$
add a comment |
$begingroup$
if $alpha=0.05$, that means you are looking for $P(Z leq z)=1-0.05=0.95$
You look where in the table (more or less) 0.95 ist written. Then you look on the lhs, take the value and add the value on the top of the column.
Was this your question ?
greetings,
calculus.
answered Apr 25 '14 at 23:31
callculuscallculus
18.2k31427
$endgroup$
if $alpha=0.05$, that means you are looking for $P(Z leq z)=1-0.05=0.95$
You look where in the table (more or less) 0.95 ist written. Then you look on the lhs, take the value and add the value on the top of the column.
Was this your question ?
greetings,
calculus.
answered Apr 25 '14 at 23:31
callculuscallculus
18.2k31427
answered Apr 25 '14 at 23:31
callculuscallculus
18.2k31427
answered Apr 25 '14 at 23:31
callculuscallculus
18.2k31427
answered Apr 25 '14 at 23:31
callculuscallculus
18.2k31427
18.2k31427
add a comment |
add a comment |
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