- #1

The actual ratio is 3/63

Where should I start?

thanks

nautica

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- Thread starter nautica
- Start date

- #1

The actual ratio is 3/63

Where should I start?

thanks

nautica

- #2

hypnagogue

Staff Emeritus

Science Advisor

Gold Member

- 2,277

- 2

What do you mean by 'actual ratio'?

- #3

Sting

- 157

- 2

You have two assumptions here: First you have a normal population or large sample and second, the population deviation is known.

State your null and alternative hypothesis.

H

H

Because you are dealing with the alternative hypothesis that is not equal to mu naught, you will have a two tailed test with the Reject H

Now, you compute the value of the test statistic:

z = (sample mean - mu naught)/[(population deviation)(sample size)

I assume you are using a significance level of 5% but since you are dealing with a two tailed test, divide that area by two (in this case, 0.05/2). Essentially, this is the area you will be looking for in the table of z scores in the appendix of any Statistics book.

I don't have a book with me at the moment but look up the z score that corresonds to your significance level. If the test statistic falls in the Do Not Reject H

Hope this helps.

- #4

Sting

- 157

- 2

The z score corresponding to your significance level is the numerical "mark" of where the Do not reject/ reject regions are.

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