Question

# A farmer would like to evaluate Miracle Grow when used on his potted

daisy plants. He sets up 20 plants in a room all facing the same window, obtaining the same amount of sunlight, and waters them identically each day. For a month, he monitors how much each plant grows. Then, he adds Miracle Grow to every pot and monitors how much each plant grows during a month with Miracle Grow. At the end of two months, he discovers that 16 plants grew more with Miracle Grow. Test the hypothesis that Miracle Grow increases plant growth (using an alpha level of .01).

What is the appropriate test?
State the null hypothesis:
State the alternative hypothesis.
Find the critical value
Calculate the obtained statistics

Make a decision:
Reject the alternative
Retain the null.
Reject the null.
Retain the alternative.

What does your decision mean?

What is a sampling distribution and why is it important for inferential statistics?

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