A horticulturist claims a new fertilizer produces plants that are significantly taller than those grown with the traditional fertilizers. The average height of plants grown with a traditional fertilaizer is 25 inches. He randomly selected 60 plants (by using a random number generator) from his greenhouse that were treated with the new fertilizer and found the average height of the plants was 22.9 inches.
A horticulturist claims a new fertilizer produces plants that are significantly taller than those grown with the traditional fertilizers. The average height of plants grown with a traditional fertilaizer is 25 inches. He randomly selected 60 plants (by using a random number generator) from his greenhouse that were treated with the new fertilizer and found the average height of the plants was 22.9 inches.
a. What is the population of interest?
b. What is the sample?
C. What is the claim?
d. What is the parameter?
e. What is the statistic?
f. What is the value of the parameter?
g. What is the value of the statistic?
h. Based on the statistic, explain whether the claim is supported or refuted. Justify your answer
i. What type of sampling plan was used to select the sample, and would it be expected to give a sample representative of the population?
j. Is the horticulturalist conducting an experimental study or an observational study?
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