Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
Large Sample Test
for a
Proportion
Conditions
• Simple random Sample
• Each sample point has just two possible
outcomes (success and failure)
• Sample includ...
Conducting a Hypothesis test
1- state the hypothesis: Ho & Ha (mutually exclusive)
2- Analysis Plan
* one sample z-test to...
Choosing the sample size
B.4  tests for proportions
B.4  tests for proportions
Upcoming SlideShare
Loading in …5
×

B.4 tests for proportions

401 views

Published on

Published in: Technology, Education
  • Be the first to comment

  • Be the first to like this

B.4 tests for proportions

  1. 1. Large Sample Test for a Proportion
  2. 2. Conditions • Simple random Sample • Each sample point has just two possible outcomes (success and failure) • Sample includes at least 10 successes and 10 failures (np>10 and nq>10 ) • Population size is at least 10 times larger than the sample
  3. 3. Conducting a Hypothesis test 1- state the hypothesis: Ho & Ha (mutually exclusive) 2- Analysis Plan * one sample z-test to determine whether the hypothesized population proportions differs significantly from the observed sample proportion 3- Analyze: find the TS and its associated P-value * SD (σ) of a sampling distribution p= hypothesized value of population proportion in null hypothesis *TS: z-score: z= (p*- p) p*= sample proportion σ σ= SD of sample statistic *P-value- probability of observing a sample statistic as extreme as the TS (USE appendix A) 4- Interpret- compare the P-value to the significance level and reject null when the P-value is less than the Significance level
  4. 4. Choosing the sample size

×