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Problem

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Textbook ExpertVerified Tutor
27 Nov 2021

Given information

Use the following information to answer the next five exercises. A researcher is testing the effects of plant food on plant growth. Nine plants have been given the plant food. Another nine plants have not been given the plant food. The heights of the plants are recorded after eight weeks. The populations have normal distributions. The following table is the result. The researcher thinks the food makes the plants grow taller.

Step-by-step explanation

Step 1.

The null and alternative hypotheses are given as follows:

 

where and are null and alternative hypotheses.   

 

 

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