Problem
Claim: The standard deviation of pulse rates of adult males is less than $11 \mathrm{bpm}$. For a random sample of 166 adult males, the pulse rates have a standard deviation of $10.3 \mathrm{bpm}$. Complete parts (a) and (b) below. a. Express the original claim in symbolic form. bpm (Type an integer or a decimal. Do not round.)
Solution
Step 1 ：The original claim is that the standard deviation of pulse rates of adult males is less than 11 bpm. In statistics, the standard deviation is often represented by the Greek letter sigma (σ). So, the original claim can be expressed in symbolic form as σ < 11.
Step 2 ：The original claim in symbolic form is \(\boxed{σ < 11}\).
