Question

body and exam measurements were collected from 300 subjects. the pulse rates from 100 males have a mean of 70.4 beats per minute and a standard deviation of 12.1 beats per minute. use the range rule of thumb for identifying significant values to identify the limits separating values that are significantly low or significantly high. is a pulse rate of 60.0 beats per minute significantly low, significantly high, or neither? (all of these pulse rates are measured at rest.) explain. click the icon to view the male pulse rates. significantly low values are □ beats per minute or lower. (type an integer or a decimal. do not round.)

Explanation:

Step1: Recall Range Rule of Thumb for Significance

The range rule of thumb for identifying significantly low or high values states that:

• Significantly low values: \( \text{Mean} - 2 \times \text{Standard Deviation} \)
• Significantly high values: \( \text{Mean} + 2 \times \text{Standard Deviation} \)

Given:
Mean (\( \mu \)) = 70.4 beats per minute,
Standard Deviation (\( \sigma \)) = 12.1 beats per minute.

Step2: Calculate Significantly Low Limit

Substitute into the formula for significantly low values:
\( \mu - 2\sigma = 70.4 - 2 \times 12.1 \)
First, calculate \( 2 \times 12.1 = 24.2 \).
Then, \( 70.4 - 24.2 = 46.2 \).

Answer:

46.2