Download presentation

Presentation is loading. Please wait.

1
**(Hypothesis test for small sample sizes)**

T-Test (Hypothesis test for small sample sizes)

2
**Find the critical value for**

Left tail, n = 15

3
**Find the critical value for**

Right tailed ; n = 10

4
**Find the critical value for**

Two-tailed, n = 28

5
**Assumptions: SRS (Simple Random Sample)**

The population is normally or approximately normally distributed Population Standard deviation is unknown and n < 30

6
**The Standardized test statistic t is:**

7
Example: The American Automobile Association claims that the mean nightly lodging rate for a family of four traveling on vacation in California is at least $136. A random sample of eleven such families has a mean nightly lodging rate of $126 with a standard deviation of $12. Is there enough evidence to reject the claim at Assume the population is normally distributed.

8
**a) Write the null and alternative hypothesis mathematically and identify the claim**

: (claim) :

9
**Find the critical values and identify the rejection region**

10
**Find the standardized test statistic**

=

11
Conclusion Decide whether to reject or fail to reject the null hypothesis. Then interpret the decision in the context of the original claim. At the 10% level, reject the null hypothesis. Evidence does not supports the claim that the mean daily meal cost is greater than or equal to $136.

12
Now do Practice 7.3

Similar presentations

OK

Chapter 8 Hypothesis Testing with Two Samples 1. Chapter Outline 8.1 Testing the Difference Between Means (Large Independent Samples) 8.2 Testing the.

Chapter 8 Hypothesis Testing with Two Samples 1. Chapter Outline 8.1 Testing the Difference Between Means (Large Independent Samples) 8.2 Testing the.

© 2018 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google

Ppt on post office protocol Ppt on job rotation definition Ppt on cross docking technique Ppt on classical economics wikipedia Ppt on ideal gas law formula Ppt on issue of shares and debentures Ppt on eddy current testing Ppt on cloud services Ppt on english grammar tenses Ppt on operation research simplex method