Conduct a matched pairs t-test

Reference no: EM1380434

The air in poultry-processing plants often contains fungus spores. Inadequate ventilation can affect the health of the workers. The problem is most serious during the summer. To measure the presence of spores, air samples are pumped to an agar plate and "colony-forming units (CFUs)" are counted after an incubation period. Here are data from two locations in a plant that processes 37,000 turkeys per day, taken on four days in the summer. The units are CFUs per cubic meter of air.

Conduct a matched pairs t-test to see if the differences in locations is significant. (note: Conduct the test so the mean difference will be positive.)

	Day 1	Day 2	Day 3	Day 4
Kill room	3175	2526	1763	1090
Processing	529	141	362	224

1. The value of the mean difference is (round your answer to one decimal place).

2. The standard error of the difference is (round your answer to two decimal places)

3. The degrees of freedom for this test are

4. The value of the test statistic is (round your answer to two decimal places)

5. Using an applet like this one you can find on the internet, CrunchIt, software, or your calculator, provide the exact p-value for the hypothesis test. Round your answer to three decimal places.

6. At alpha=0.05 the null hypothesis is rejected.
True or False

7. At alpha = 0.01 the null hypothesis is rejected.
True or False

8. At alpha = 0.10 the null hypothesis is rejected.
True or False

9. In the answer boxes below fill in the (1) lower bound and (2) upper bound of the 95% Confidence Interval for the difference. Round your answer to two decimal places.
Answer 1
Answer 2

10. We can tell just by looking at the confidence interval that Ho was rejected at the 0.05 level without having to conduct the t-test.
True or False

Reference no: EM1380434

Questions Cloud

structure as well as organized according to the logical flow : To develop a plan for a project we will utilize the concept of a project network which shows work activities taken from the work breakdown structure as well as organized according to the logical flow in time as well as relationships governing when..

Question about pointerlists : Whenever the pointer of a list or a tree is manipulated, procedure that performs this operation must be considered to be in a critical section.

Find the average number of bits needed to encode : Suppose that the symbols are compressed using Huffman Coding and that the most likely symbol is encoded as a 0, determine the decompressed value of the following compressed string of bits?

Illustrate as well describe the impact of the inward shift : Suppose that butter is one of the key elements for lemon cakes in Samoa. Assuming ceteris paribus, use a graph to illustrate as well as describe the impact of the inward shift of the supply curve for butter on the supply

Conduct a matched pairs t-test : Conduct a matched pairs t-test to see if the differences in locations is significant - The air in poultry-processing plants often contains fungus spores.

Reverse path flooding : Suppose we have a network of nodes connected via point to point links, and source S sends a message that will be broadcast to all nodes using Reverse Path Flooding.

Deliberate whether Mirna is behaving in a professional way : Deliberate whether Mirna is behaving in a professional manner. -Does this actually make a difference? -What would you do if you Mirna? -What would you prepare if you were Mirna's supervisor?

Explain who are the stakeholders in this situation : Explain who are the stakeholders in this situation? Suggest two substitutes that management should consider.

User Account

All Pages