Friday

December 19, 2014

December 19, 2014

Posted by **daniel** on Wednesday, April 20, 2011 at 12:03am.

- statistics -
**MathGuru**, Wednesday, April 20, 2011 at 8:05pmNull hypothesis:

Ho: p = .65 -->meaning: population proportion is equal to .65

Alternative hypothesis:

Ha: p < .65 -->meaning: population proportion is less than .65

Using a formula for a binomial proportion one-sample z-test with your data included, we have:

z = (.58 - .65) -->test value (58/100 = .58) minus population value (.65)

divided by

√[(.65)(.35)/100] --> .35 represents 1 - .65 and 100 is the sample size.

Use a z-table to find the critical or cutoff value for a one-tailed test (lower tail) at .01 level of significance. The test is one-tailed because the alternative hypothesis is showing a specific direction (less than).

If the test statistic exceeds the critical value you find from the table, reject the null. If the test statistic does not exceed the critical value from the table, do not reject the null.

You can draw your conclusions from there.

I hope this will help get you started.

**Answer this Question**

**Related Questions**

statistics - A random sample of n = 30 is drawn from a population that is ...

statistics - A random sample of n= 12 is drawn from a population that is ...

statistics - A specific study found that the average number of doctor visits per...

statistics - A specific study found that the average number of doctor visits per...

algebra 1 - Circle the most appropriate description. 27.A city planning ...

sssc - Suppose we test H0 : p = .3 versus Ha : p ≠ .3 and that a random ...

statistics - The number of column inches of classified advertisements appearing ...

Statistics and Probability - A computer supply house receives a large shipment ...

Statistics - City A has 1,000,000 people; City B has 4,000,000 people. Suppose ...

Algebra 1 - Can you please check my work? A city planning committee surveys 100 ...