The value of t-test statistics used for testing $Ho : \mu =40$ from a sample of 16 observations with sample mean $(\overline{x})=50$ and sample standard deviation (S) = 20, is :
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 2
The t-test statistic is,
$t=\frac{\bar x-μ_0}{s/\sqrt{n}}$
$=\frac{50-40}{20/\sqrt{16}}=\frac{50-40}{5}=2$