Question

A botanical research center is studying a new fertilizer’s impact on plant growth. In a trial, 25 sunflower plants are treated with the fertilizer, and after four weeks, their heights are measured. The sample shows a mean height of 48.3 cm with a standard deviation of 2.1 cm. Assume the plant heights are normally distributed. Use α = 0.10. (a) Is there enough evidence to support the claim that the fertilizer leads to a mean plant height of 47.5 cm? (b) Is it believable that the average height of the plants exceeds 45 cm?

Name: a botanical research center is studying a new fertilizers impact on plant growth in a trial 25 sunflower plants are treated with the fertilizer and after four weeks their heights are measure 85559
Uploaded: 2022-01-09T15:33:07-08:00
Duration: 3 min 58 s
Channel: Ajiboye Tunde
Description: a botanical research center is studying a new fertilizers impact on plant growth in a trial 25 sunflower plants are treated with the fertilizer and after four weeks their heights are measure 85559

          A botanical research center is studying a new fertilizer’s impact on plant growth. In a
trial, 25 sunflower plants are treated with the fertilizer, and after four weeks, their heights are measured. The
sample shows a mean height of 48.3 cm with a standard deviation of 2.1 cm. Assume the plant heights are
normally distributed. Use α = 0.10.
(a) Is there enough evidence to support the claim that the fertilizer leads to a mean plant height of 47.5
cm?
(b) Is it believable that the average height of the plants exceeds 45 cm?

Added by Patrick R.

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