Neco 2024 Biology Question 24

Practice objective / multiple choice question 24 from the 2024 Neco Biology examination.

Neco 2024 Biology Objective / Multiple Choice Hard Difficulty
Question 24 NECO • 2024 • BIOLOGY • objective

In an experiment to test the effect of hormone H on the growth of a plant species, the heights (cm) of five control plants and five plants treated with hormone H were recorded:\n\nControl: 12.1, 11.8, 12.5, 12.0, 11.9\nTreatment: 13.4, 13.0, 13.6, 13.2, 13.5\n\nAssuming the data are normally distributed and the variances are equal, perform a two‑sample t‑test at the \(5\%\) significance level to determine whether hormone H significantly increases plant height. State the calculated t‑value, the critical t‑value, and your conclusion.

Answer Options

A. t = 7.9, critical t = 2.306; difference is not statistically significant (hormone does not increase growth)
B. t = 5.2, critical t = 2.306; difference is statistically significant (hormone increases growth)
Correct Answer C. t = 7.9, critical t = 2.306; difference is statistically significant (hormone increases growth)
D. t = 2.1, critical t = 2.306; difference is not statistically significant (hormone does not increase growth)
Correct Answer
C
Correct Option:
t = 7.9, critical t = 2.306; difference is statistically significant (hormone increases growth)

About This Question

This is Neco 2024 Biology Question 24. It is one of the objective questions from the 2024 Neco Biology examination.

Difficulty level: Hard .

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