Use the 6 steps method to solve the following. 1. In plan nursery, the owner thinks that the length of seedlings in a box sprayed with a new kind of fertilizer has an average height of 26 cm after three days and standard deviation of 10 cm. One researcher randomly selected 80 such seedlings and calculated the mean height to be 20 cm and the standard deviation was 10 cm. Conduct a one-tailed test. Proceed with the test using 90% confidence level.
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H₀: μ = 20 cm (The average height of seedlings is 20 cm) H₁: μ > 20 cm (The average height of seedlings is greater than 20 cm) Show more…
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