Q 88. Pulse rates Here are data on the... [FREE SOLUTION]

91影视

The Practice of Statistics for AP Examination

Daren Starnes, Josh Tabor

$Math Studyset 91影视 Explanations$ Math

6th Edition 路 837 pages

ISBN: 9781319113339

Chapter 1: Q 88. (page 75)

Pulse rates Here are data on the resting pulse rates (in beats per minute) of 19 middle school students:
(a) Calculate the mean. Show your work.
(b) The student with a 120 pulse rate has a medical issue. Find the mean pulse rate for the other 18 students. What property of the mean does this illustrate?

Short Answer

Expert verified

Part (a) 81.2105

Part (b) 79.0556, non-resistant property

Step by step solution

Part (a) Step 1. Given information.

The given data is shown below:

Part (a) Step 2. Find the mean.

$n = 19 \overset{炉}{x} = \frac{{鈭�}_{i = 1}^{n} x_{i}}{n} = \frac{(71 + 104 + 76 + 88 + 78 + 71 + 68 + 86 + 70 + 90 + 74 + 76 + 69 + 68 + 88 + 96 + 68 + 82 + 120)}{19} = \frac{1543}{19} 鈮� 81.2105$

The mean is 81.205 beats per minute.

Part (b) Step 1. Find the mean pulse rate for the other 18 students.

It is given that The student with a 120 pulse rate has a medical issue. So we have to calculate the mean of the other 18 students.

$n = 18 \overset{炉}{x} = \frac{{鈭�}_{i = 1}^{n} x_{i}}{n} = \frac{(71 + 104 + 76 + 88 + 78 + 71 + 68 + 86 + 70 + 90 + 74 + 76 + 69 + 68 + 88 + 96 + 68 + 82)}{19} = \frac{1423}{18} 鈮� 79.0556$