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Question

How to test a hypothesis about a mean ?

Answer

Decide what is H0

Decide about what tail(s) is alpha on.

Find the critical value, draw Normal dist curve and shade the rejection zone

Find mean and SD of the sample

\(\sigma^{2} \approx s^2 = {\sum{X^2}-{(\sum {X})^2 \over {(n)}}\over (n-1)}\)

OR use sigma from the population.

Use formula : \(Z = {(\hat {X} -\mu) \over {s\times\sqrt {n}}}\)

Calculate \(\hat{\alpha}\) : if ess than α, reject the null hypothesis

Decide about what tail(s) is alpha on.

Find the critical value, draw Normal dist curve and shade the rejection zone

Find mean and SD of the sample

\(\sigma^{2} \approx s^2 = {\sum{X^2}-{(\sum {X})^2 \over {(n)}}\over (n-1)}\)

OR use sigma from the population.

Use formula : \(Z = {(\hat {X} -\mu) \over {s\times\sqrt {n}}}\)

Calculate \(\hat{\alpha}\) : if ess than α, reject the null hypothesis

Question

How to test a hypothesis about a mean ?

Answer

?

Question

How to test a hypothesis about a mean ?

Answer

Decide what is H0

Decide about what tail(s) is alpha on.

Find the critical value, draw Normal dist curve and shade the rejection zone

Find mean and SD of the sample

\(\sigma^{2} \approx s^2 = {\sum{X^2}-{(\sum {X})^2 \over {(n)}}\over (n-1)}\)

OR use sigma from the population.

Use formula : \(Z = {(\hat {X} -\mu) \over {s\times\sqrt {n}}}\)

Calculate \(\hat{\alpha}\) : if ess than α, reject the null hypothesis

Decide about what tail(s) is alpha on.

Find the critical value, draw Normal dist curve and shade the rejection zone

Find mean and SD of the sample

\(\sigma^{2} \approx s^2 = {\sum{X^2}-{(\sum {X})^2 \over {(n)}}\over (n-1)}\)

OR use sigma from the population.

Use formula : \(Z = {(\hat {X} -\mu) \over {s\times\sqrt {n}}}\)

Calculate \(\hat{\alpha}\) : if ess than α, reject the null hypothesis

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#### pdf

owner: naxplast06 - (no access) - Deviant S. - The Practically Cheating Statistics Handbook (2010, CreateSpace Independent Publishing Platform).pdf, p126

status | not learned | measured difficulty | 37% [default] | last interval [days] | |||
---|---|---|---|---|---|---|---|

repetition number in this series | 0 | memorised on | scheduled repetition | ||||

scheduled repetition interval | last repetition or drill |

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