The building specifications in a certain city require that the sewer pipe used in residential areas...

90.2K

Verified Solution

Question

Statistics

The building specifications in a certain city require that thesewer pipe used in residential areas have a mean breaking strengthof more than 2500 pounds per lineal foot. A manufacturer who wouldlike to supply the city with sewer pipe has submitted a bid andprovided the following information: An independent contractorrandomly selected seven sections of the manufacturer’s pipe andtested each for breaking strength. The results (pounds per linealfoot) are as follows: 2610, 2750, 2420, 2510, 2540, 2490, and2680.
1. What type of test should be conducted?
Dependent t test
Independent t test
One sample t test

2. State the null hypothesis in equation format.
3. State the alternative hypothesis in equation format.
4. What is the calculated t-value (to 3 significant digits)?
5. What is the critical t-value (to 3 significant digits)? Usealpha = 0.05.
6. Is the null hypothesis accepted or rejected? Use alpha =0.05.
7. Is there sufficient evidence to conclude that there is adifference between the mean rate of increase of total phosphorus ofthe control algal and the water hyacinth? Use alpha = 0.05. Explainin one sentence.

Answer & Explanation Solved by verified expert

3.7 Ratings (692 Votes)

Solution1 One sample ttest2State the hypotheses The first step is tostate the null hypothesis and an alternative hypothesisNull hypothesis u 2500Note that these hypotheses constitute a onetailed test Thenull See Answer

Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:

Unlimited Question Access with detailed Answers
Zin AI - 3 Million Words
10 Dall-E 3 Images
20 Plot Generations
Conversation with Dialogue Memory
No Ads, Ever!
Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!

Become a Member