Question

a sample of 29 basil plants from a population with mean height of 50 cm. after treatment with a new fertilizer the sample mean height is found to be 54 cm and variance to be 49. what is the degree of freedom?
a 28
b 48
c 29
d 30

Explanation:

Step1: Recall the formula for degrees of freedom

For a sample, the degrees of freedom \(df=n - 1\), where \(n\) is the sample size.

Step2: Substitute the sample size into the formula

Given \(n = 29\), then \(df=29-1\).
$$df = 28$$

Answer:

A. 28